About: methane

Head noun: methane

Same concepts
http://dbpedia.org/resource/Methane

Broader concepts

label	provenance	confidence
volatile compound	isap:44728745	0.749012
organic material	isap:48143192	0.748816
light hydrocarbon	isap:66441202	0.724127
potent greenhouse gas	isap:509575560	0.696945
organic chemical	isap:49798244	0.688023
pollutant into the atmosphere	isap:318877684	0.655507
by-product	isap:243059209	0.652072
molecule	isap:45571876	0.651215
waste product	isap:437682782	0.649086
volatile organic compound	isap:44728747	0.647853
substance	isap:316331442	0.647256
non-co2 greenhouse gas	isap:509575623	0.643989
dangerous gas	isap:509575575	0.642901
short-lived climate pollutant	isap:318877677	0.640841
toxic gas	isap:509575573	0.638298
low molecular weight hydrocarbon	isap:66441208	0.636916
component of the atmosphere	isap:320837108	0.635806
organic compound	isap:44728744	0.632645
component of natural gas	isap:320837107	0.629744
organic molecule	isap:45571877	0.629037
fossil fuel	isap:80655754	0.617041
heat-trapping gas	isap:509575572	0.615237
long-lived greenhouse gas	isap:509575612	0.609019
dissolve gas	isap:509575593	0.600657
greenhouse gas pollutant	isap:318877679	0.600539
green house gas	isap:509575582	0.600502
important greenhouse	isap:242239641	0.599030
noxious gas	isap:509575597	0.596856
example	isap:433061056	0.594335
so-called greenhouse gas	isap:509575622	0.587901
hydrocarbon in the atmosphere	isap:66441219	0.584858
powerful greenhouse gas	isap:509575562	0.579104
better understanding of ghg	isap:145275594	0.578563
explosive gas	isap:509575581	0.577044
component	isap:320837106	0.576430
various hydrocarbon	isap:66441206	0.576379
type of gas	isap:70751527	0.575180
simple asphyxiant	isap:245561549	0.574007
volatile organic compound voc	isap:509537475	0.573203
waste gas	isap:509575590	0.571792
low molecular weight alkane	isap:272414838	0.569637
atmosphere	isap:243877406	0.569559
such greenhouse gas	isap:509575727	0.568232
poisonous gas	isap:509575614	0.565373
short-lived pollutant	isap:318877683	0.564943
trace gas	isap:509575565	0.564410
component of the gas	isap:320837115	0.563283
material	isap:48143191	0.561366
natural gas	isap:509575561	0.560726
ghg emission	isap:50115577	0.560464
flammable gas	isap:509575566	0.559599
other key greenhouse gas	isap:509575611	0.559513
other potent greenhouse gas	isap:509575666	0.558604
greenhouse emission	isap:50115585	0.557667
thing	isap:39199686	0.557223
low carbon number hydrocarbon	isap:66441234	0.556789
chemical	isap:49798243	0.550926
voc	isap:509537474	0.550284
gaseous hydrocarbon	isap:66441204	0.548881
other green house gas	isap:509575652	0.546893
molecular weight hydrocarbon gas	isap:509575712	0.545576
landfill gas	isap:509575574	0.544086
product	isap:437682780	0.543897
harmful gas	isap:509575588	0.539020
hydrocarbon	isap:66441201	0.538703
fuel	isap:80655753	0.538100
carbon monoxide	isap:44638578	0.537893
emission	isap:50115576	0.536680
air pollutant	isap:318877678	0.532644
alkane	isap:272414836	0.532607
green house gas ghg	isap:509575079	0.531720
renewable energy source	isap:272594224	0.529467
global warming	isap:438340317	0.529117
compound	isap:44728743	0.528257
liquified gas	isap:509575693	0.527344
element	isap:435058620	0.526984
source of greenhouse gas	isap:272594221	0.525774
other greenhouse gas	isap:509575563	0.525508
gas in the atmosphere	isap:509575569	0.523025
fuel gas	isap:509575605	0.522526
human activity	isap:47007372	0.517624
short-lived climate forcer	isap:274276647	0.517501
global warming pollutant	isap:318877685	0.517236
greenhouse	isap:242239640	0.517129
combustible gas	isap:509575571	0.513461
other atmospheric gas	isap:509575670	0.505874
low molecular weight	isap:268453421	0.504521
simple organic compound	isap:44728752	0.502569
more greenhouse gas	isap:509575633	0.499497
chemical compound	isap:44728746	0.496048
gas into the atmosphere	isap:509575610	0.493824
other trace gas	isap:509575650	0.493671
global warming potential	isap:319373413	0.492008
gas	isap:509575559	0.491237
anthropogenic greenhouse gas	isap:509575784	0.490150
greenhouse gas	isap:509575558	0.489790
other gas	isap:509575564	0.489229
non co2 gas	isap:509575808	0.489100
petroleum gas	isap:509575628	0.487347
hydrogen compound	isap:44728749	0.486445
carbon dioxide	isap:433012459	0.486021
other carbon-containing gas	isap:509575810	0.485288
various greenhouse gas	isap:509575641	0.484932
carbon-based fuel	isap:80655759	0.480686
heat-trapping greenhouse gas	isap:509575607	0.480216
gas from the landfill	isap:509575772	0.479230
greenhouse gas ghg	isap:509575064	0.479050
hydrocarbon product	isap:437682781	0.478220
light gas	isap:509575617	0.476288
unconventional fossil fuel	isap:80655775	0.476272
component in natural gas	isap:320837118	0.475706
trace amount	isap:269274088	0.474741
ghg in the atmosphere	isap:509575071	0.474398
carbon compound	isap:44728748	0.473743
greenhouse gas level	isap:38278352	0.472837
ghg	isap:509575063	0.472640
light hydrocarbon gas	isap:509575603	0.471779
gas in the oil	isap:509575813	0.470390
livestock emission	isap:50115583	0.468579
pollutant	isap:318877676	0.468388
hydrocarbon feedstock	isap:319931812	0.465393
form of natural gas	isap:80632565	0.465392
carbon-containing molecule	isap:45571901	0.461926
alternative fuel	isap:80655757	0.461021
hydrocarbon component	isap:320837110	0.460319
ozone precursor	isap:316719415	0.460026
atmospheric trace gas	isap:509575631	0.459256
product of the process	isap:437682790	0.457767
constituent of natural gas	isap:66125789	0.457389
important atmospheric gas	isap:509575842	0.456862
carbon source	isap:272594225	0.454766
soil gas	isap:509575730	0.454713
organic matter	isap:275933313	0.454511
agent of global warming	isap:34333196	0.453622
greenhouse gas pollution	isap:318759712	0.453542
part of the carbon	isap:79996505	0.453268
short-lived gas	isap:509575609	0.451445
emission of greenhouse gas	isap:50115575	0.450427
carbon dioxide co2	isap:509563490	0.450055
unsaturated hydrocarbon	isap:66441224	0.449954
hydrocarbon-based gas	isap:509575825	0.449687
abundant fuel	isap:80655766	0.449327
gas produce by landfill	isap:509575837	0.445913
liquid	isap:269742476	0.445863
house gas	isap:509575664	0.445799
combustible material	isap:48143196	0.444992
ground-level ozone	isap:39440825	0.444918
complex hydrocarbon	isap:66441240	0.444792
lighter component	isap:320837112	0.443597
harmful emission	isap:50115605	0.442171
greenhouse gas emission	isap:50115574	0.441207
hydrocarbon species	isap:428507086	0.439473
type of emission	isap:70751531	0.439254
noxious emission	isap:50115608	0.438533
chemical species	isap:428507088	0.438533
energy carrier	isap:435767510	0.438033
significant green house gas	isap:509575828	0.437459
byproduct gas	isap:509575805	0.435971
other volatile	isap:50016861	0.434807
inorganic compound	isap:44728755	0.434721
light alkane	isap:272414839	0.434157
aliphatic hydrocarbon	isap:66441211	0.434017
hydrocarbon gas	isap:509575568	0.433664
non-co2 gas	isap:509575726	0.433383
certain hydrocarbon	isap:66441247	0.432860
large quantity of gas	isap:48591065	0.432814
production of biogenic gas	isap:245524915	0.432746
related gas	isap:509575811	0.431863
potent global warming gas	isap:509575667	0.431325
carbon contain gas	isap:269857546	0.431282
production of greenhouse gas	isap:245524913	0.431190
value-added gas	isap:509575637	0.431121
energy source	isap:272594220	0.431102
effective greenhouse gas	isap:509575584	0.430770
useful gas	isap:509575679	0.430467
additional greenhouse gas	isap:509575619	0.428711
other element	isap:435058621	0.428692
constituent of the atmosphere	isap:66125787	0.428397
climate pollutant	isap:318877680	0.427004
inflammable gas	isap:509575638	0.426733
organic gas	isap:509575592	0.426450
gas product	isap:437682792	0.425371
feedback	isap:49199124	0.425340
emission of short-lived pollutant	isap:50115604	0.424808
usable gas	isap:509575733	0.424470
other pollutant	isap:318877687	0.423832
greenhouse gas gas	isap:509575685	0.422794
waste management	isap:245683787	0.422002
non-co2 ghg	isap:509575073	0.421934
increase of greenhouse gas	isap:47172962	0.421886
factor	isap:273282941	0.421013
release of noxious gas	isap:431487537	0.420582
reduction in greenhouse gas	isap:317681206	0.420207
volatile gas	isap:509575604	0.420192
gas well	isap:70602236	0.420049
other hydrocarbon	isap:66441213	0.419932
major greenhouse gas	isap:509575587	0.419647
amount of other gas	isap:269274090	0.419640
toxic chemical	isap:49798245	0.419543
hydrocarbon vapor	isap:35828602	0.419272
non-co2 emission	isap:50115614	0.419011
source of energy	isap:272594223	0.418564
atmospheric gas	isap:509575580	0.418262
hydrogen sulfide	isap:435730740	0.418045
emission of potent greenhouse	isap:50115597	0.417230
dangerous chemical	isap:49798251	0.416862
byproduct	isap:317822393	0.416296
powerful ghg	isap:509575066	0.415978
common fuel	isap:80655761	0.415629
different gas	isap:509575649	0.415350
sign of life	isap:80212722	0.414674
hydrocarbon compound	isap:44728750	0.414357
potent green house gas	isap:509575639	0.413990
kyoto protocol	isap:45260487	0.413651
use of alternative fuel	isap:509530750	0.412152
emission of heat-trapping gas	isap:50115579	0.411936
toxic substance	isap:316331449	0.411420
certain greenhouse gas	isap:509575769	0.411312
small organic molecule	isap:45571885	0.410992
significant greenhouse gas	isap:509575589	0.409845
level of greenhouse gas	isap:38278351	0.409052
unburned gas	isap:509575845	0.408876
reduction of greenhouse gas	isap:317681207	0.408753
amount of toxic gas	isap:269274094	0.408516
release gas	isap:509575630	0.408266
greenhouse gas 25 time	isap:509575601	0.408192
similar hydrocarbon gas	isap:509575839	0.407977
gas mixture	isap:428932974	0.406554
sewer gas	isap:509575710	0.405529
emission of other gas	isap:50115584	0.405458
hydrocarbon precursor	isap:316719416	0.404195
concentration of other greenhouse	isap:145573040	0.403641
certain gas	isap:509575591	0.403429
concentration of greenhouse gas	isap:145573038	0.402150
gaseous product	isap:437682783	0.401769
trace	isap:38657290	0.401378
energy resource	isap:44959293	0.401089
unconventional gas	isap:509575827	0.400932
coal bed	isap:509561082	0.400925
release of greenhouse gas	isap:431487534	0.400803
harmful pollutant	isap:318877686	0.400719
energy product	isap:437682787	0.398817
raw material	isap:48143197	0.398183
gas molecule	isap:45571880	0.397394
noncondensible gas	isap:509575728	0.395614
frozen gas	isap:509575600	0.395315
various gas	isap:509575606	0.394773
fugitive emission	isap:50115603	0.394686
lower alkane	isap:272414837	0.394570
resource	isap:44959292	0.393559
ghg into the atmosphere	isap:509575076	0.392734
hazardous substance	isap:316331446	0.392703
carbon-containing gas	isap:509575621	0.392509
simple organic	isap:429633018	0.391583
greenhouse gas a gas	isap:509575835	0.391539
gas from the well	isap:509575691	0.391492
gaseous substance	isap:316331443	0.389761
carbon	isap:269857545	0.389742
well-mixed greenhouse gas	isap:509575665	0.388066
saturated hydrocarbon	isap:66441205	0.387574
important ghg	isap:509575077	0.387522
coalb methane	isap:431123429	0.387395
short-term greenhouse gas	isap:509575844	0.386025
word	isap:70519816	0.385253
shorter-lived greenhouse gas	isap:509575695	0.384760
contaminant	isap:65837366	0.384661
direct greenhouse gas	isap:509575734	0.383985
bigger problem than co2	isap:437516287	0.383673
by-product of the decomposition	isap:243059213	0.382798
variety of hydrocarbon	isap:435712253	0.382637
non-condensable hydrocarbon	isap:66441212	0.382578
trace greenhouse gas	isap:509575635	0.382175
several other gas	isap:509575831	0.382135
effect	isap:271156207	0.381919
emission of some greenhouse	isap:50115593	0.381216
short-lived greenhouse gas	isap:509575640	0.380170
common organic compound	isap:44728776	0.379262
hydrocarbon content	isap:432651785	0.376111
buildup of greenhouse gas	isap:430307221	0.376007
hydrocarbon fuel	isap:80655755	0.374765
organic waste	isap:33566481	0.374275
combustible hydrocarbon	isap:66441236	0.372642
gas in the air	isap:509575690	0.371813
amount of greenhouse gas	isap:269274086	0.371573
greenhouse hydrocarbon	isap:66441231	0.370938
greenhouse gas ghg emission	isap:50115596	0.369880
trace element	isap:435058622	0.369723
carbonaceous material	isap:48143194	0.366650
number of compound	isap:269521154	0.366018
quantity of other greenhouse	isap:48591066	0.364852
coal seam gas	isap:509575725	0.363352
fluid	isap:39210343	0.362349
mix of gas	isap:509515387	0.361874
liquid hydrocarbon	isap:66441203	0.361798
harmful substance	isap:316331445	0.361676
intermediate compound	isap:44728778	0.361518
harmful chemical	isap:49798250	0.360804
concentration of certain gas	isap:145573049	0.360530
sort of gas	isap:70653559	0.359992
cause of climate change	isap:39281390	0.359057
biogass	isap:432632982	0.356737
produce gaseous hydrocarbon	isap:66441244	0.356094
number of gas	isap:269521152	0.356076
other ghg	isap:509575065	0.355921
saturated compound	isap:44728753	0.354688
carbon-rich gas	isap:509575646	0.354352
light	isap:37935050	0.354108
other inert gas	isap:509575778	0.354101
methane leakage	isap:437756622	0.352671
cause of global warming	isap:39281391	0.352446
gas than carbon dioxide	isap:509575602	0.349284
useful product	isap:437682786	0.348581
similar gas	isap:509575709	0.347964
fuel cell	isap:80394869	0.344381
soil	isap:80230792	0.343223
variety of gas	isap:435712251	0.341979
harmful greenhouse gas	isap:509575627	0.341829
important greenhouse gas	isap:509575577	0.341337
simple hydrocarbon	isap:66441207	0.341321
tetrahedral molecule	isap:45571899	0.338803
heat trapping gas	isap:509575731	0.336335
potential biomarker	isap:318968509	0.335868
combustion of hydrocarbon	isap:243791103	0.335757
dangerous condition	isap:319203473	0.335601
naturally-occurring gas	isap:509575785	0.335295
non-polar molecule	isap:45571894	0.335163
industrial gas	isap:509575697	0.334996
concern	isap:430978909	0.332442
abundant greenhouse gas	isap:509575683	0.331996
driver of climate change	isap:270361876	0.331747
toxic greenhouse gas	isap:509575735	0.331265
black carbon	isap:269857547	0.330984
release of gas	isap:431487536	0.330067
constituent	isap:66125786	0.328166
global warming gas	isap:509575595	0.327448
planet-warming gas	isap:509575838	0.326724
alternate fuel	isap:80655763	0.326633
simple compound	isap:44728768	0.326301
volatile hydrocarbon	isap:66441210	0.325771
useful substance	isap:316331447	0.325545
volatile	isap:50016860	0.325362
increase in greenhouse gas	isap:47172960	0.324987
methane emission	isap:50115611	0.324890
biological activity	isap:47007374	0.324797
minor constituent	isap:66125788	0.324349
reduce compound	isap:44728764	0.323097
valuable resource	isap:44959294	0.323079
simple molecule	isap:45571879	0.322927
common gas	isap:509575596	0.322830
carbon emission	isap:50115589	0.322138
emission of ghg	isap:50115591	0.321624
hazardous gas	isap:509575750	0.321123
compound of carbon	isap:44728757	0.320274
volatile component	isap:320837119	0.319708
gas compound	isap:44728769	0.319048
source	isap:272594222	0.318748
carrier gas	isap:509575636	0.318505
alternative	isap:66357789	0.318296
hydrocarbon-based fuel	isap:80655768	0.316249
reactant gas	isap:509575809	0.315827
fuel source	isap:272594228	0.315809
biogenic gas	isap:509575688	0.315586
gaseous fuel	isap:80655756	0.315376
so-called greenhouse	isap:242239644	0.315270
trap air	isap:509558961	0.315003
biofuel in different way	isap:432595634	0.314914
usable fuel	isap:80655765	0.314907
odourless gas	isap:509575699	0.314853
stable molecule	isap:45571888	0.314197
reactive gas	isap:509575662	0.313227
mixture of hydrocarbon gas	isap:428932977	0.313070
other	isap:38954684	0.312796
mineral	isap:432254465	0.312197
impurity	isap:45226701	0.312179
potent gas	isap:509575668	0.312103
important gas	isap:509575680	0.312075
non-polar solvent	isap:429559139	0.310992
parameter	isap:321354902	0.309229
release of large quantity	isap:431487539	0.308938
more potent ghg	isap:509575070	0.308709
output of greenhouse gas	isap:265848406	0.308424
source of carbon	isap:272594236	0.308271
clean fuel	isap:80655760	0.307945
ground	isap:268003188	0.307810
mixture of carbon dioxide	isap:428932989	0.307194
co	isap:56536274	0.305649
several gas	isap:509575615	0.304467
useful fuel	isap:80655764	0.304428
short-lived ghg	isap:509575080	0.303606
icy material	isap:48143199	0.303354
greenhouse gas per molecule	isap:509575738	0.303309
gas emission	isap:50115582	0.303307
renewable resource	isap:44959299	0.303049
mixture of hydrocarbon	isap:428932975	0.302642
greenhouse effect	isap:271156206	0.302327
powerful greenhouse	isap:242239642	0.301824
small molecule	isap:45571881	0.300555
inert gas	isap:509575586	0.299865
oxygen gas	isap:509575775	0.299799
change in greenhouse gas	isap:274642184	0.298866
bioga	isap:36275005	0.296347
greenhouse-gas emission	isap:50115612	0.296159
clean fossil fuel	isap:80655780	0.294911
of methane	isap:431123430	0.293647
flammable vapor	isap:35828604	0.292625
however	isap:438960224	0.291380
hydro-carbon	isap:512165086	0.291174
reactive molecule	isap:45571900	0.291096
clean air act	isap:509559228	0.289961
carbon-containing compound	isap:44728777	0.289938
petrochemical	isap:145798620	0.289586
such gas	isap:509575789	0.289388
ammonia	isap:435427030	0.288920
dry gas	isap:509575676	0.284908
halogenate hydrocarbon	isap:66441235	0.284290
other component	isap:320837109	0.284199
man-made source	isap:272594242	0.284174
high temperature	isap:65740534	0.283814
point	isap:38282680	0.283017
release greenhouse gas	isap:509575694	0.279993
organic substance	isap:316331448	0.279441
lower hydrocarbon	isap:66441214	0.278840
organic	isap:429633017	0.278511
major component	isap:320837117	0.277449
gaseous mixture	isap:428932976	0.276322
renewable energy	isap:274134303	0.275800
hydrocarbon molecule	isap:45571883	0.275693
compress natural gas cng	isap:509563474	0.274974
explosive natural gas	isap:509575720	0.273127
good thing	isap:39199688	0.272207
steam reform of hydrocarbon	isap:40376808	0.270855
particle	isap:50634138	0.269849
water vapor	isap:35828601	0.269673
concentration of a number	isap:145573047	0.269479
energy gas	isap:509575807	0.268829
partial oxidation of hydrocarbon	isap:320251790	0.268791
other fuel	isap:80655758	0.268737
pollution	isap:318759711	0.267305
property of the snow	isap:46220075	0.267103
other fossil fuel	isap:80655770	0.266406
mixture	isap:428932972	0.265815
air pollution	isap:318759715	0.265623
generation of greenhouse gas	isap:245396157	0.263151
condition	isap:319203472	0.262947
accumulation of greenhouse gas	isap:512674940	0.262535
dust	isap:80524200	0.262445
hazard	isap:274909988	0.262375
co2	isap:509563489	0.261928
vapor	isap:35828600	0.261551
group of bacterium	isap:37657852	0.260929
evolution of gas	isap:317294292	0.260873
co2 emission	isap:50115588	0.260538
contributor	isap:67102745	0.259652
nitrogen	isap:46673630	0.259628
increase in other greenhouse	isap:47172963	0.258577
ghg'	isap:80702502	0.256107
present invention	isap:320852540	0.255559
oils	isap:79998924	0.255192
inert	isap:31481275	0.254945
quantity of greenhouse gas	isap:48591064	0.254596
greenhouse g	isap:124730162	0.252783
paraffin	isap:50642107	0.251648
alcohol	isap:436960048	0.251483
item	isap:80863172	0.251287
datum	isap:32474404	0.250995
toxin	isap:38501058	0.250873
slcp	isap:80232984	0.248672
source of renewable energy	isap:272594229	0.248661
common natural gas	isap:509575836	0.248098
rise in greenhouse gas	isap:80149291	0.248022
system	isap:273571665	0.247470
colorless gas	isap:509575579	0.247432
quantity of gas	isap:48591063	0.247301
emission of short-lived climate	isap:50115586	0.246731
metabolic product	isap:437682784	0.246128
emission of other greenhouse	isap:50115578	0.245789
industrial revolution	isap:244858641	0.245591
natural gas component	isap:320837122	0.244628
diluent	isap:438689626	0.243987
amount of natural gas	isap:269274089	0.243019
hydrogen	isap:48624416	0.242505
presence of gas	isap:47350774	0.241878
powerful heat-trapping gas	isap:509575724	0.241845
increase	isap:47172966	0.240069
time	isap:70619636	0.239143
combustible	isap:65085620	0.237034
guest molecule	isap:45571884	0.236460
bio-fuel	isap:51660754	0.235334
c4 hydrocarbon	isap:66441209	0.235294
carcinogen	isap:242125914	0.235242
number of trace gas	isap:269521157	0.234978
gas hydrate	isap:430214119	0.234969
non-condensable gas	isap:509575647	0.234339
like	isap:79742567	0.233997
greenhou	isap:48024899	0.233930
gas production	isap:245524911	0.233266
flammable	isap:318923312	0.232831
lake of liquid hydrocarbon	isap:79766571	0.232580
material gas	isap:509575659	0.232072
waste	isap:33566477	0.231800
noble gas	isap:509575673	0.231327
strong greenhouse gas	isap:509575583	0.230471
c1-c4 alkane	isap:272414845	0.230233
use	isap:509530748	0.229755
ether	isap:34150794	0.228812
air gas	isap:509575820	0.227286
change	isap:274642183	0.226702
clean-burning gas	isap:509575719	0.226151
gas stream	isap:271261033	0.224685
energy	isap:274134300	0.224636
build-up of greenhouse gas	isap:49872474	0.223844
fracking	isap:51764757	0.223701
earth	isap:35351066	0.223585
gas in term	isap:509575721	0.223225
contributor of greenhouse gas	isap:67102747	0.223103
active gas	isap:509575671	0.223050
ice	isap:509512750	0.222865
odorless	isap:51025509	0.222563
source of emission	isap:272594239	0.221565
environment	isap:65664469	0.221300
common example	isap:433061057	0.220475
form of biomass	isap:80632573	0.218962
source of hydrogen	isap:272594241	0.217540
gaseous	isap:435343741	0.217166
dry gas natural gas	isap:509575718	0.216184
mixture of gas	isap:428932973	0.215955
group	isap:37657853	0.214367
agent	isap:34333195	0.213479
atmosphere at the time	isap:243877412	0.213332
propane	isap:437834252	0.212541
biogase	isap:432632884	0.211861
carbon atom	isap:78830007	0.211647
other product	isap:437682791	0.211346
climate change	isap:274642182	0.209527
gulf of mexico	isap:80739130	0.209201
value	isap:35838082	0.208845
asphyxiant	isap:245561550	0.208652
human health	isap:273539874	0.207643
coal	isap:80374912	0.206821
call greenhouse gas	isap:509575790	0.206057
volume of greenhouse gas	isap:276126819	0.205633
part	isap:79996504	0.205227
sulfonic acid	isap:78868014	0.203715
methane	isap:431123428	0.203515
ability	isap:431246913	0.203360
agriculture	isap:65988288	0.203249
metal	isap:34071927	0.202956
compress natural gas	isap:509575661	0.202697
clue	isap:80388831	0.202411
covalent compound	isap:44728779	0.201948
water	isap:33576517	0.200809
type of hydrocarbon	isap:70751532	0.200086
main component	isap:320837120	0.200082
everything	isap:244798273	0.199810
surprise	isap:46834573	0.199682
hydrocarbon base gas	isap:66441229	0.199673
neurotoxin	isap:242950729	0.198764
mix	isap:509515385	0.197767
issue	isap:31870532	0.197673
human body	isap:80360481	0.197385
metabolite	isap:243306542	0.197053
formation of gas	isap:316961783	0.196558
right	isap:34725302	0.195678
ozone	isap:39440824	0.195575
c	isap:124730138	0.195461
feedstock	isap:319931816	0.195305
emission of gas	isap:50115581	0.195300
climate	isap:434956920	0.194898
stuff	isap:40411567	0.194045
serious problem	isap:437516288	0.192925
epa	isap:509569999	0.192764
solid	isap:32126069	0.192170
warming potential	isap:319373414	0.191015
site	isap:80213512	0.190072
danger	isap:267016360	0.189759
alkyl	isap:37917699	0.189688
billion of year	isap:434016113	0.189329
finally	isap:428499464	0.188786
colorless	isap:318565907	0.188546
species	isap:428507085	0.187791
release	isap:431487535	0.187679
concentration	isap:145573043	0.187494
conversion	isap:243586753	0.187157
analysis of the chemical	isap:44800723	0.186666
groundwater	isap:64751276	0.185821
produce gas	isap:509575722	0.185711
emission of so-called greenhouse	isap:50115607	0.185253
activity	isap:47007373	0.184190
alkyne	isap:272481522	0.183855
production	isap:245524912	0.183669
temperature	isap:65740533	0.182705
percent nitrogen	isap:46673631	0.181819
simplest hydrocarbon	isap:66441220	0.180313
formation	isap:316961782	0.180192
flammable mixture	isap:428932984	0.179474
trapping	isap:44890129	0.179320
people	isap:270952982	0.178969
odorless gas	isap:509575578	0.178335
cloud	isap:38514381	0.177660
solid waste	isap:33566478	0.177197
hydrocarbon oils	isap:79998925	0.176418
fact natural gas	isap:80583929	0.175579
something	isap:319480673	0.175087
sea	isap:509527789	0.174622
mine	isap:79836667	0.174526
ethanol	isap:431560431	0.171989
study	isap:40411759	0.171312
process	isap:437409864	0.169951
shale gas	isap:509575682	0.169922
digestive process	isap:437409866	0.169717
period	isap:271095913	0.169164
precursor	isap:316719414	0.168889
account	isap:429736175	0.168665
molecule of gas	isap:45571889	0.168345
butane	isap:270957320	0.168252
mars	isap:79858517	0.166224
chemical composition	isap:66333038	0.165795
thin atmosphere	isap:243877408	0.164782
form of hydrocarbon	isap:80632574	0.164154
argon	isap:38341562	0.163818
supply	isap:274389983	0.163548
rock	isap:80240610	0.163450
impact	isap:272848022	0.162628
substrate	isap:317673145	0.161812
manure	isap:275494735	0.161608
landfill	isap:48474424	0.161231
growth	isap:268020094	0.160732
therefore	isap:319045147	0.160022
biofuel	isap:432595633	0.159687
cng	isap:509563473	0.156036
h2	isap:56536455	0.155764
body	isap:80360480	0.155082
warming	isap:438340319	0.154616
form	isap:80632567	0.154475
matter	isap:275933314	0.153999
alkene	isap:272424901	0.153903
stream	isap:271261032	0.153879
drilling	isap:44896964	0.153052
cooking	isap:430703002	0.152487
gas cloud	isap:38514382	0.152263
volcano	isap:428487108	0.151956
many	isap:79858749	0.151639
addition	isap:48970527	0.151465
pennsylvanium	isap:145567326	0.151145
moreover	isap:51919103	0.146145
ground gas	isap:509575698	0.143178
ethane	isap:273052186	0.141563
major contributor	isap:67102744	0.140494
case	isap:80404738	0.140186
significant contributor	isap:67102746	0.140019
gasoline	isap:47939888	0.139458
problem	isap:437516284	0.138537
naturally	isap:321161886	0.137403
life	isap:79744468	0.136017
leakage	isap:437756623	0.134616
separation	isap:242644570	0.134088
interest	isap:45638366	0.133108
course	isap:268260609	0.132700
vehicle use alternative fuel	isap:430224881	0.132532
phenomenon	isap:242243453	0.132159
also	isap:78809770	0.131855
further	isap:429555391	0.131854
gas industry	isap:50735583	0.130847
method	isap:275453124	0.129447
region	isap:265675401	0.127317
oil	isap:509518929	0.126637
space	isap:40670234	0.125892
result	isap:267438348	0.124890
garbage	isap:432661928	0.124314
yes	isap:509540012	0.123483
scenario	isap:47375372	0.123398
flow	isap:80640898	0.122044
generally	isap:317378022	0.121218
thus	isap:70615632	0.120877
heat	isap:80747967	0.120157
hydrate	isap:430214120	0.120077
bio-gas	isap:436596122	0.117138
cow	isap:509564011	0.116668
lng	isap:509514219	0.116213
methanol	isap:46533026	0.114730
biogas	isap:275156010	0.114487
benefit	isap:433346619	0.112867
cathode	isap:437244496	0.110828
benzene	isap:431738365	0.109804
risk	isap:80149275	0.108022
plant	isap:38351634	0.107933
fraction	isap:50389421	0.106857
globally	isap:48852946	0.106567
uranus	isap:265712618	0.103901
lake	isap:79766570	0.103755
area	isap:78789214	0.103342
planet	isap:275978672	0.103172
researcher	isap:242894050	0.100691
oxygen	isap:273750868	0.097793
cent	isap:80394856	0.097656
synga	isap:40012574	0.097499
knowledge	isap:319659663	0.096277
neptune	isap:434494996	0.096145
operator	isap:47757444	0.095775
least	isap:38252362	0.095175
pure hydrogen	isap:48624419	0.094243
document	isap:46892332	0.091799
presence	isap:47350775	0.091599
rest	isap:80141377	0.091395
control	isap:432229440	0.087600
and	isap:509559598	0.087556
canary	isap:270181495	0.086986
engine	isap:274342422	0.086829
biomass	isap:433034708	0.086295
climatologist	isap:145758279	0.083167
fertilizer	isap:242393580	0.079611
question	isap:47621423	0.073829
carbon monoxide co	isap:56536275	0.073527
best estimate	isap:52157845	0.069022
air	isap:509558960	0.061939
scientist	isap:318618141	0.055269
flatus	isap:265865725	0.053558
half	isap:80764440	0.047257
the	isap:509533125	0.042779
g	isap:124730161	0.034040

Narrower concepts

label	provenance	confidence
natural gas	isap:235756062	0.604529
hydrogen sulfide	isap:429101741	0.502751
nitrous oxide	isap:223624902	0.502588
toxic gas	isap:235756066	0.483544
coal mine	isap:8251829	0.462290
carbon dioxide	isap:429591839	0.426544
methane hydrate	isap:429352234	0.366104
water vapour	isap:440284494	0.335220
methanol	isap:346474854	0.316087
paper	isap:227440628	0.315268
water vapor	isap:223892307	0.314509
hydrogen	isap:344101154	0.303172
potent greenhouse gas	isap:235756064	0.291010
ethane	isap:446755699	0.279248
co2	isap:235053379	0.277783
greenhouse gas than co2	isap:235756072	0.256648
chlorofluorocarbon	isap:226494012	0.255478
landfill	isap:345063691	0.237474
powerful greenhouse gas	isap:235756065	0.225797
nasty greenhouse gas	isap:235756067	0.218481
atmosphere	isap:218712851	0.212542
oxygen	isap:448116682	0.208670
gas hydrate	isap:429352235	0.207767
methane	isap:431123428	0.203515
cfcs	isap:4977903	0.183865
nitrogen	isap:347662822	0.177086
coal	isap:11069153	0.171198
burning of fossil fuel	isap:436600414	0.170862
livestock	isap:29056889	0.167658
perfluorocarbon	isap:29529947	0.167015
mercury	isap:432732306	0.161184
water	isap:229133595	0.158255
propane	isap:433778001	0.154804
butane	isap:444180777	0.152685
cow	isap:236278746	0.150288
soot	isap:10792291	0.144411
gas	isap:235756063	0.143138
heat	isap:10662469	0.141576
bioga	isap:231049814	0.141550
ethylene	isap:344521881	0.137558
life on earth	isap:8118251	0.126306
air	isap:231732499	0.114267
stratosphere	isap:110040018	0.112115
propylene	isap:25312130	0.109332
methanogen	isap:218178292	0.095070
life	isap:8118250	0.091249
origin	isap:447825883	0.086280
ocean	isap:226671776	0.085183
permafrost	isap:219604190	0.083918
problem	isap:434679444	0.075775
oil	isap:235861761	0.072956
however	isap:431183467	0.066271
time	isap:2649443	0.065659
volcano	isap:428416265	0.061196
fuel	isap:9016048	0.060136
hydrate	isap:429352236	0.044917
source	isap:440466641	0.038456