About: fossil fuel

Premodifier: fossil
Head noun: fuel

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

Broader concepts

label	provenance	confidence
organic material	isap:454022403	0.887895
non-renewable source	isap:309053108	0.883003
source of energy	isap:309053094	0.860194
traditional energy source	isap:309053100	0.859332
energy source	isap:309053092	0.822238
conventional energy source	isap:309053106	0.818709
human activity	isap:454139572	0.816505
alternative source of energy	isap:309053121	0.815181
raw material	isap:454022402	0.812184
non-renewable source of energy	isap:309053097	0.811857
natural resource	isap:458358283	0.787858
external input	isap:86193112	0.787548
greenhouse gas	isap:128573809	0.785135
heat source	isap:309053136	0.784564
precious natural resource	isap:458358355	0.781677
renewable energy source	isap:309053103	0.780313
non-renewable energy source	isap:309053098	0.778017
organic carbon source	isap:309053193	0.773210
alternative energy source	isap:309053099	0.769534
new energy source	isap:309053158	0.769106
natural capital	isap:11673543	0.768674
other energy source	isap:309053111	0.767727
traditional source of energy	isap:309053122	0.763439
other fuel	isap:178219070	0.761506
destructive form of energy	isap:178203897	0.761456
fewer natural resource	isap:458358323	0.761439
energy resource	isap:458358288	0.760819
infrastructure	isap:476853541	0.756812
other source of energy	isap:309053115	0.754281
alternative	isap:418426872	0.751218
nonrenewable resource	isap:458358284	0.746847
anthropogenic activity	isap:454139587	0.743477
finite resource	isap:458358281	0.741704
type of non-renewable energy	isap:171368150	0.740541
solid fuel	isap:178219116	0.736923
non-renewable natural resource	isap:458358291	0.734812
form of energy	isap:178203870	0.734034
factor	isap:301329868	0.732089
environmental issue	isap:85743909	0.731789
basic industry	isap:454700015	0.726112
fuel	isap:178218988	0.723901
renewable source	isap:309053116	0.723570
mineral deposit	isap:1844196	0.721218
other source	isap:309053104	0.720134
source of greenhouse gas	isap:309053101	0.719682
anthropogenic source	isap:309053221	0.719202
other form of energy	isap:178203872	0.718601
non-renewable resource	isap:458358282	0.718383
conventional source	isap:309053177	0.717485
renewable energy resource	isap:458358305	0.713117
harmful subsidy	isap:5252020	0.703950
thing	isap:94687615	0.701137
other form	isap:178203898	0.700092
regulate industry	isap:454700013	0.697583
outdated source of energy	isap:309053213	0.696420
greenhouse gas emitter	isap:4019035	0.684968
clean source of energy	isap:309053236	0.678880
combustion of organic matter	isap:187761824	0.676928
conservation of natural resource	isap:314462838	0.676725
management of natural resource	isap:191487325	0.674344
renewable energy	isap:310713025	0.674126
greenhouse gas emission	isap:460964570	0.673108
alternative form of energy	isap:178203899	0.672852
other power source	isap:309053133	0.671263
burning of organic material	isap:6522968	0.670722
alternate energy source	isap:309053214	0.670619
combustion of organic material	isap:187761825	0.669991
cause of climate change	isap:92556767	0.668592
nonrenewable source	isap:309053124	0.664903
activity	isap:454139573	0.664307
usage of natural resource	isap:86849542	0.660267
alternative fuel	isap:178219180	0.660154
energy subsidy	isap:5252022	0.658504
form of renewable energy	isap:178203891	0.652829
carbon-containing fuel	isap:178219167	0.652031
form of electrical power	isap:178203884	0.649448
electric power generation	isap:189946855	0.642848
other form of power	isap:178203901	0.641912
result from incomplete combustion	isap:310365928	0.640568
source	isap:309053093	0.638215
resource	isap:458358280	0.636267
finite energy source	isap:309053204	0.634009
material	isap:454022398	0.632571
topic	isap:94580349	0.632040
form of alternative energy	isap:178203883	0.631313
finite source of energy	isap:309053113	0.631081
form	isap:178203871	0.631010
animal life	isap:170664701	0.627068
limited resource	isap:458358285	0.624682
energy supplies	isap:454919850	0.619569
chemical energy	isap:310713078	0.613406
chemical	isap:461506712	0.606434
many form	isap:178203890	0.605697
limited source	isap:309053139	0.602610
outdated technology	isap:188709221	0.598064
power generation	isap:189946849	0.593887
carbon emission	isap:460964574	0.590717
abundance	isap:288240176	0.590516
nonrenewable energy resource	isap:458358358	0.590124
means	isap:87263293	0.589801
government subsidy	isap:5252028	0.585961
human action	isap:301464776	0.583515
renewable resource	isap:458358287	0.583154
depletion of natural resource	isap:288211169	0.581138
energy sector	isap:306250742	0.576941
use energy	isap:310713067	0.571483
earth resource	isap:458358348	0.570167
other industry	isap:454700019	0.568488
reliance on non-renewable energy	isap:460001790	0.567682
contributor	isap:418328713	0.567136
extractive industry	isap:454700016	0.563563
finite source	isap:309053112	0.560278
option	isap:306778672	0.559453
global energy market	isap:310039020	0.559075
many source	isap:309053215	0.558358
consumption of natural resource	isap:417897448	0.557975
new source of energy	isap:309053211	0.551866
producer of greenhouse gas	isap:453738745	0.551059
process	isap:4610349	0.549964
environmental cost	isap:178023079	0.546604
important resource	isap:458358298	0.544138
earth's crust	isap:90439627	0.543872
paradigm shift	isap:91623257	0.542747
subject	isap:4312002	0.538691
issue	isap:85743901	0.536574
energy demand	isap:311654921	0.525421
mineral	isap:10663148	0.525031
human influence	isap:290960422	0.520988
global warming	isap:7150752	0.520033
energy cost	isap:178023112	0.518413
finite natural resource	isap:458358307	0.515490
limited natural resource	isap:458358342	0.515449
petroleum product	isap:4557308	0.513521
abundance of natural resource	isap:288240177	0.513019
combustion of fuel	isap:187761826	0.506371
use of non-renewable resource	isap:127990437	0.505040
greenhouse emission	isap:460964595	0.504558
import	isap:306946994	0.504040
mining	isap:308687843	0.503767
pathway	isap:2857649	0.502795
nonrenewable energy source	isap:309053164	0.500072
civilization	isap:314191045	0.495128
energy production	isap:190032469	0.494471
source of the energy	isap:309053199	0.493949
carbon dioxide co2	isap:128566221	0.493403
stock of non-renewable resource	isap:93408889	0.493241
source of emission	isap:309053138	0.489604
something	isap:286945654	0.488899
electrical power	isap:95243762	0.484145
non-renewable energy	isap:310713034	0.483740
fossil fuel use	isap:127990447	0.481664
energy input	isap:86193111	0.478822
incentive	isap:290362194	0.478589
commodity	isap:285479903	0.478032
irreplaceable resource	isap:458358337	0.477928
ocean	isap:91374113	0.476617
exploitation of natural resource	isap:314072395	0.469964
use of natural resource	isap:127990440	0.468602
environment	isap:419059420	0.468291
non renewable resource	isap:458358321	0.467991
waste	isap:90287751	0.467909
subsidy	isap:5252021	0.467326
dependence on energy	isap:190621739	0.466927
electric energy	isap:310713047	0.464057
primary source of energy	isap:309053219	0.457138
plant	isap:95617928	0.456863
primary energy source	isap:309053109	0.456716
non-sustainable resource	isap:458358330	0.455772
source of renewable energy	isap:309053191	0.452862
influence	isap:290960423	0.450648
global greenhouse gas emission	isap:460964591	0.450342
concept	isap:10856092	0.443168
other textile	isap:8289004	0.438917
amount of electricity	isap:300387247	0.437383
service	isap:2148787	0.437282
area	isap:179498121	0.433760
s	isap:477075943	0.432860
exposure	isap:457449486	0.432323
solar energy	isap:310713026	0.431562
nuclear power	isap:95243756	0.431336
renewable	isap:290471684	0.431027
use of resource	isap:127990432	0.429640
good source of energy	isap:309053161	0.429420
exception	isap:285414999	0.427931
energy	isap:310713023	0.427468
source of power	isap:309053206	0.426966
fuel source	isap:309053155	0.426043
power plant	isap:95617927	0.425952
problem	isap:4746135	0.421652
carbon dioxide emission	isap:460964577	0.420995
natural	isap:12186525	0.420825
dead-end	isap:458237100	0.420420
everything	isap:188103187	0.419724
product	isap:4557231	0.418277
energy form	isap:178203896	0.417896
scarce resource	isap:458358299	0.416553
form of energy production	isap:178203895	0.416475
energy use	isap:127990428	0.414653
carbon dioxide	isap:9997688	0.414507
infinite resource	isap:458358343	0.412679
time	isap:171416003	0.409719
current energy system	isap:303313679	0.409520
insult	isap:311212628	0.409482
priority	isap:459986510	0.408743
cheaper source of energy	isap:309053200	0.408233
anything	isap:459008231	0.407076
demand for energy	isap:311654915	0.406207
co2 emission	isap:460964573	0.405384
renewable source of energy	isap:309053234	0.404936
need	isap:170712707	0.404648
concentration of greenhouse gas	isap:41201795	0.403819
precious resource	isap:458358304	0.403086
exploitation	isap:314072396	0.401945
society	isap:9811632	0.401666
environmental impact	isap:308337710	0.400659
switch	isap:309624694	0.398368
emission of carbon dioxide	isap:460964575	0.397803
use of conventional energy	isap:127990454	0.397402
result of human activity	isap:310365925	0.395970
lot of energy	isap:127977015	0.395894
nonrenewable source of energy	isap:309053152	0.395528
most part	isap:170978302	0.394917
earth	isap:85121888	0.393711
effort	isap:306155657	0.393686
biomass	isap:3119365	0.393206
production	isap:190032468	0.393118
transition	isap:187842901	0.392608
government	isap:189905472	0.392539
lie	isap:127976796	0.389500
biofuel	isap:3600919	0.388846
input	isap:86193105	0.388486
investment	isap:190739894	0.388482
climate change	isap:306701643	0.385798
economy	isap:7634959	0.382877
chance	isap:306701431	0.382400
form of solar energy	isap:178203880	0.380224
transport system	isap:303313684	0.377593
bad idea	isap:178596063	0.377207
amount of energy	isap:300387253	0.375629
driver for climate change	isap:312131092	0.375181
use of energy	isap:127990434	0.372508
energy supply	isap:306060360	0.372286
energy price	isap:96105734	0.371632
combustion	isap:187761823	0.371311
future	isap:309244347	0.369642
emission of greenhouse gas	isap:460964571	0.369429
development	isap:416827718	0.368665
power source	isap:309053105	0.366977
practice	isap:454243709	0.364011
economic growth	isap:306899114	0.363885
threat	isap:307580045	0.363456
other	isap:92954833	0.362605
power production	isap:190032476	0.358437
reliance	isap:460001791	0.356370
source of carbon dioxide	isap:309053120	0.355814
fossil fuel	isap:178218991	0.355785
better long-term investment	isap:190739897	0.353952
increase in emission	isap:454739183	0.353465
good thing	isap:94687618	0.352611
global emission	isap:460964590	0.352547
clean energy technology	isap:188709226	0.351901
thing of the past	isap:94687617	0.350655
concentrated form of energy	isap:178203902	0.350284
change	isap:306701646	0.348408
availability of cheap energy	isap:314395028	0.348370
large scale	isap:91890582	0.347731
emission	isap:460964572	0.343202
matter	isap:309829209	0.340614
conservation	isap:314462836	0.340385
finite energy	isap:310713077	0.339721
energy policy	isap:306464356	0.339485
global economy	isap:7634966	0.339432
liquid	isap:305151190	0.337748
significant contributor	isap:418328719	0.336927
consumption of energy	isap:417897453	0.335834
amount of natural resource	isap:300387254	0.335137
common source	isap:309053137	0.332167
argument	isap:460577535	0.331341
carbon tax	isap:127991291	0.330561
hydrocarbon	isap:416754230	0.330321
measure	isap:11584268	0.330291
demand	isap:311654920	0.328606
pollutant	isap:287018125	0.328106
major contributor	isap:418328712	0.327783
new co2	isap:128566220	0.327448
way	isap:127986417	0.326992
co2	isap:128566219	0.326136
interesting question	isap:461193392	0.326115
past	isap:170978774	0.323574
store energy	isap:310713076	0.323513
analysis	isap:461187060	0.322725
burning	isap:6522967	0.321565
nonrenewable energy	isap:310713074	0.320450
import energy	isap:310713053	0.320386
electricity	isap:417534437	0.319549
compound	isap:455744722	0.319101
exhaustible resource	isap:458358322	0.318603
reality	isap:10624129	0.318515
industrial society	isap:9811634	0.318290
large contributor	isap:418328716	0.317839
limit	isap:85156257	0.316293
finite commodity	isap:285479914	0.314664
people	isap:302226201	0.314411
wealth	isap:302626618	0.314400
global commodity	isap:285479926	0.314161
case	isap:179671776	0.313967
abundant energy	isap:310713070	0.313605
interest	isap:455351564	0.312392
price of energy	isap:96105736	0.311988
best thing	isap:94687628	0.310959
energy issue	isap:85743921	0.307892
winner	isap:303045255	0.306498
term	isap:171404449	0.306076
benefit	isap:2553138	0.305893
human	isap:88399464	0.303829
region	isap:308886870	0.303631
major source	isap:309053148	0.302401
dirty business	isap:453825728	0.301332
solution	isap:457697550	0.299015
half	isap:178483910	0.298922
means of energy production	isap:87263296	0.298725
limited supply	isap:306060362	0.298067
place around the world	isap:95621403	0.295909
car	isap:128567346	0.294632
cost of energy	isap:178023116	0.293462
bad thing	isap:94687635	0.293430
state	isap:90702714	0.293320
nature	isap:304600730	0.293000
good example	isap:2774145	0.292869
major concern	isap:10856576	0.292590
depletable resource	isap:458358334	0.292415
big problem	isap:4746146	0.291768
good idea	isap:178596066	0.291193
dollar industry	isap:454700018	0.291164
danger	isap:311294767	0.290854
transportation	isap:476761150	0.290831
incomplete combustion	isap:187761829	0.290461
business	isap:453825726	0.290312
big	isap:128568158	0.289241
contributing factor	isap:301329894	0.287884
gift from nature	isap:178379933	0.286122
energy storage	isap:6163499	0.286027
point	isap:95208763	0.283709
increase in co2	isap:454739174	0.282749
substance	isap:289443770	0.282649
technology	isap:188709197	0.280726
poverty	isap:9571354	0.279744
however	isap:8966057	0.279240
distant memory	isap:306652306	0.279019
dead end	isap:128569900	0.278535
store solar energy	isap:310713045	0.277304
air pollution	isap:286993828	0.276882
system	isap:303313658	0.274102
force	isap:94732704	0.274066
conversion	isap:188866865	0.273119
push	isap:171081003	0.272563
today	isap:94527013	0.272548
solar power	isap:95243755	0.271259
big deal	isap:177983001	0.270187
nothing	isap:5407676	0.270129
finite supply	isap:306060357	0.270094
alternative energy	isap:310713038	0.269859
generation	isap:189946845	0.269379
energy generation	isap:189946851	0.269231
power	isap:95243751	0.262795
water	isap:90286677	0.262148
natural gas	isap:128573811	0.261628
ethanol	isap:3027654	0.258924
d	isap:477076102	0.258606
west virginia	isap:461285967	0.256964
step	isap:171235900	0.256848
consumption	isap:417897443	0.255833
wind power	isap:95243754	0.254860
pesticide	isap:286285407	0.254331
ghg	isap:128573611	0.254022
vehicle	isap:4790040	0.252271
progress	isap:459703259	0.251083
feedstock	isap:285536803	0.249706
extraction	isap:188663208	0.249400
fact	isap:178269951	0.247589
air	isap:128563427	0.246343
dollar	isap:306781761	0.245338
us	isap:515808866	0.244182
gas	isap:128573812	0.242358
part	isap:170978285	0.241763
coal	isap:178020762	0.241223
nuclear energy	isap:310713029	0.239236
company	isap:2896090	0.238975
result	isap:310365927	0.237406
petroleum	isap:290359079	0.236437
source of electricity	isap:309053110	0.235681
planet	isap:303719965	0.231593
damage	isap:311206542	0.230537
example	isap:2774142	0.229843
cost	isap:178023057	0.227815
currently	isap:286414113	0.224910
hydrogen	isap:456403082	0.224703
necessity	isap:290556385	0.224264
dependency	isap:190621701	0.222354
man	isap:127975828	0.221531
question	isap:461193390	0.221262
challenge	isap:286387069	0.219931
machinery	isap:286889914	0.219747
proposition	isap:417401779	0.219620
biggest advantage	isap:288826283	0.215178
space	isap:90861585	0.214994
replacement	isap:416969422	0.212942
risk	isap:171201500	0.210874
blessing	isap:455364410	0.209470
electricity generation	isap:189946848	0.209331
concern	isap:10856560	0.205815
fraction	isap:461426637	0.205742
cause of global warming	isap:92556761	0.205241
hydro	isap:87953908	0.204556
that	isap:171423262	0.199706
well	isap:171649891	0.198970
portion	isap:7966329	0.198589
carbon	isap:309507399	0.197282
temperature	isap:418495474	0.195869
gasoline	isap:456025545	0.194067
expensive	isap:289832934	0.193514
use	isap:127990427	0.192252
number	isap:303517363	0.190938
diesel	isap:310741050	0.190841
united states	isap:306396862	0.190436
world	isap:88966019	0.190365
india	isap:86196785	0.187804
battery	isap:2072111	0.187195
heating	isap:7726045	0.186967
food	isap:178201610	0.186427
wind	isap:171736226	0.186279
cause	isap:92556762	0.185878
nevertheless	isap:314151239	0.181580
myth	isap:170752255	0.180750
stuff	isap:93446117	0.180562
supply	isap:306060358	0.180345
debate	isap:311101437	0.180047
atmosphere	isap:190253839	0.179020
machine	isap:11833861	0.178359
nation	isap:304630977	0.171580
limited	isap:10454882	0.171177
meaning	isap:11218956	0.171034
heat	isap:178471993	0.170099
cannot	isap:309608782	0.169077
home	isap:178451990	0.168201
reason	isap:308609723	0.168021
metal	isap:87309564	0.166311
industry	isap:454700010	0.157636
present	isap:6786185	0.156189
rest	isap:171211611	0.152459
energy efficiency	isap:190724232	0.152106
year	isap:171927153	0.152014
washington	isap:188866158	0.148383
mankind	isap:8711271	0.145384
pollution	isap:286993826	0.123069
amount	isap:300387249	0.119800
country	isap:3865607	0.118903
house	isap:88413000	0.111971
oil	isap:127971355	0.099053
student	isap:9482964	0.092650

Narrower concepts

label	provenance	confidence
liquefy natural gas	isap:246503406	0.858148
petroleum product	isap:75890212	0.818605
greenhouse gas	isap:246503532	0.811871
coal mining	isap:499768130	0.811514
coal oil	isap:245922931	0.805922
oil shale	isap:197648440	0.802830
power plant	isap:200352286	0.801421
crude oil	isap:245922883	0.792647
wind energy	isap:495220608	0.792229
solar energy	isap:495220604	0.790546
greenhouse gas emission	isap:377484916	0.785214
solid fuel	isap:178219165	0.782742
heavy fuel	isap:178219115	0.775414
shale gas	isap:246503387	0.770429
dirty coal	isap:168288186	0.762024
gas oil	isap:245922958	0.757213
jet fuel	isap:178219035	0.756367
solar power	isap:203997735	0.752212
cheap natural gas	isap:246503541	0.748598
diesel fuel	isap:178218998	0.745305
electric car	isap:251350321	0.743390
propane	isap:71852893	0.743113
energy source	isap:498322490	0.741796
carbon dioxide emission	isap:377484924	0.738916
coal-fired power	isap:203997737	0.729368
coal seam gas	isap:246503594	0.728350
fuel oil	isap:245922895	0.724907
liquefy petroleum gas	isap:246503645	0.721612
health effect	isap:494721531	0.716476
heating oil	isap:245922896	0.710345
climate change	isap:492353445	0.709515
waste heat	isap:167520459	0.707661
petroleum coke	isap:175948401	0.704959
fracked natural gas	isap:246503516	0.702430
keystone pipeline	isap:381589577	0.702419
automobile exhaust	isap:71613684	0.701275
fuel cell	isap:169512151	0.694955
peak oil	isap:245922965	0.691847
shale oil	isap:245922905	0.691363
widespread use of coal	isap:246096940	0.690364
home heating oil	isap:245923070	0.687607
oil sand	isap:178569877	0.687488
oil gas	isap:246503702	0.687319
carbon tax	isap:247745787	0.684645
alternative fuel source	isap:498322492	0.684427
coal-fired power plant	isap:200352287	0.678598
expensive diesel	isap:492615695	0.677630
propane gas	isap:246503637	0.674634
renewable energy	isap:495220602	0.670347
gasoline	isap:378174564	0.669633
solar panel	isap:206058702	0.669602
burning of oil	isap:76591253	0.657855
carbon emission	isap:377484917	0.655647
less coal	isap:168288202	0.652539
tar sand	isap:178569863	0.649862
more oil	isap:245922922	0.646948
industrial heat	isap:167520463	0.643841
air pollution	isap:150608967	0.638373
middle east oil	isap:245923046	0.626817
fact oil	isap:245922928	0.622027
cheap fossil fuel	isap:178219144	0.619649
methane	isap:80655754	0.617041
wind	isap:175616816	0.613417
united states	isap:496250584	0.600995
petroleum	isap:151911005	0.597131
diesel	isap:492615592	0.594485
climate disruption	isap:503237919	0.587971
car engine exhaust	isap:71613683	0.587686
carbon dioxide	isap:70515904	0.587373
sierra club	isap:165946205	0.583753
nuclear energy	isap:495220607	0.583339
power generation	isap:503341905	0.582102
coal power plant	isap:200352299	0.576380
export of coal	isap:500740593	0.572890
alberta oil sand	isap:178569875	0.572084
development	isap:355999058	0.569102
brown coal	isap:168288154	0.567716
idea oil	isap:245922992	0.564409
petroleum derivative	isap:504508603	0.562606
gas	isap:246503376	0.562166
pm coal	isap:168288229	0.559990
lignite	isap:71133058	0.559420
combustion of coal	isap:506827506	0.553484
import oil	isap:245922899	0.553086
cheap oil	isap:245922947	0.552647
nuclear	isap:74627966	0.544528
lp gas	isap:246503569	0.542972
fossil fuel extraction	isap:503877534	0.539635
black coal	isap:168288311	0.539276
methanol	isap:378580379	0.538934
other industry	isap:381065231	0.535132
drilling for oil	isap:384112587	0.529806
renewable	isap:150631539	0.528030
big oil	isap:245922940	0.526725
ng	isap:333643645	0.522169
carbon footprint	isap:148369127	0.519859
deforestation	isap:146099140	0.518818
mineral	isap:71948042	0.514552
biomass	isap:71226020	0.514059
diesel engine	isap:497415549	0.513373
foreign oil	isap:245922897	0.510623
burning of coal	isap:76591252	0.510237
natural gas	isap:246503373	0.508763
million of barrel	isap:74219915	0.508456
dependence on petroleum	isap:505509335	0.506909
electricity from burn coal	isap:356766771	0.505198
nuclear power	isap:203997728	0.504671
methane hydrate	isap:78090707	0.504636
hydro power	isap:203997748	0.503790
electricity by burn coal	isap:356766765	0.501573
cheap coal	isap:168288264	0.497401
price of natural gas	isap:195082512	0.496859
wind power	isap:203997733	0.495643
gas plant	isap:200352297	0.492611
oil	isap:245922880	0.491117
primary source of energy	isap:498322494	0.488795
coal	isap:168288122	0.488547
ethanol	isap:79880089	0.487960
consumption of oil	isap:356776563	0.487651
many industrial process	isap:72251273	0.486315
high price	isap:195082528	0.484544
water	isap:194687653	0.478060
electric vehicle	isap:77266329	0.476663
co2 emission	isap:377484915	0.473719
petrol	isap:493451291	0.461518
energy from coal	isap:495220616	0.458135
renewable energy source	isap:498322489	0.455388
diesel oil	isap:245923076	0.455058
use coal	isap:168288209	0.449608
price of oil	isap:195082507	0.449492
power from coal	isap:203997756	0.445312
hydroelectric	isap:146451245	0.444906
burning	isap:76591256	0.443056
acid rain	isap:174826438	0.442854
fuel	isap:178218992	0.436400
oils	isap:171698055	0.432310
russium	isap:71250079	0.431863
north america	isap:79981214	0.431245
uranium	isap:73388682	0.431165
charcoal	isap:384128882	0.423113
coke	isap:175948399	0.421058
pollution	isap:150608968	0.410613
car	isap:251350320	0.410464
kerosene	isap:380824686	0.408959
shale	isap:197648445	0.407657
electricity	isap:356766747	0.406226
reserve of coal	isap:79583778	0.404026
home	isap:171893913	0.403851
effect of climate change	isap:494721533	0.403463
petroleum oil	isap:245922919	0.395581
nat gas	isap:246503661	0.395359
gas company	isap:74439899	0.391760
forest	isap:499862440	0.390573
gas price	isap:195082516	0.390502
material	isap:383250618	0.387961
coal for electricity	isap:168288268	0.384409
energy content	isap:70905696	0.383255
timber	isap:492011990	0.382975
food	isap:173186453	0.382728
problem	isap:80397974	0.381690
exxon	isap:194183680	0.379573
biofuel	isap:71171235	0.376002
solar	isap:195499464	0.369786
reliance on coal	isap:382535019	0.369369
drilling	isap:384112586	0.365871
china	isap:197381992	0.360553
wood	isap:174696237	0.356335
transportation	isap:215935154	0.356098
fossil fuel	isap:178218991	0.355785
coal coal	isap:168288216	0.354375
hydrocarbon	isap:356157341	0.353865
hydrogen gas	isap:246503550	0.353384
reliability	isap:354668511	0.352347
finite resource	isap:379360592	0.351703
volcano	isap:76510821	0.350130
global warming	isap:78523953	0.349933
other source	isap:498322501	0.345904
lng	isap:246635091	0.338369
petrochemical	isap:146205432	0.337707
hundred of year	isap:76425165	0.337243
one	isap:249599375	0.336671
reserve	isap:79583779	0.334917
oil like tar sand	isap:245922964	0.331954
ontario	isap:76176850	0.331784
india	isap:205426464	0.330741
use of coal	isap:246096921	0.330382
ironically	isap:505550537	0.327484
vehicle	isap:77266320	0.325558
middle east	isap:166648216	0.325556
yes	isap:248126561	0.320347
mining	isap:499768131	0.317520
alga	isap:175658885	0.315924
climate	isap:72850821	0.312680
recycling	isap:149112129	0.311434
fracking	isap:381630322	0.310592
heat	isap:167520458	0.306394
bio-fuel	isap:379396055	0.303983
crude	isap:201424377	0.302893
warming	isap:78523955	0.301379
electricity generation	isap:503341906	0.300862
soot	isap:171046999	0.298223
tar sand oil	isap:245922920	0.294708
plastic	isap:79366728	0.294157
agriculture	isap:355359433	0.290779
investment in oil	isap:506935846	0.290301
component	isap:151187685	0.287628
energy	isap:495220600	0.279626
cng	isap:246588286	0.279243
firewood	isap:380430335	0.277159
tar-sand	isap:380779763	0.274855
danger	isap:488746531	0.274020
addition	isap:376865481	0.273004
production	isap:503528608	0.270285
century	isap:72958137	0.269783
traffic	isap:79653815	0.268213
course	isap:491274985	0.268073
country	isap:73983038	0.267555
automobile	isap:503723783	0.266572
moreover	isap:381157818	0.266442
hydrogen	isap:377597613	0.266418
peat	isap:166028186	0.266006
use	isap:246096925	0.265134
carbon	isap:495614317	0.264977
generator	isap:151192464	0.263097
bitumen	isap:71600155	0.258984
past	isap:169133378	0.256832
emission	isap:377484922	0.256292
earth	isap:202679159	0.256198
arctic	isap:499118040	0.254161
fact	isap:174233507	0.252244
human	isap:200960269	0.248522
area	isap:166927454	0.245441
also	isap:170790725	0.243383
combustion	isap:506827514	0.242323
form of coal	isap:173505285	0.241559
us	isap:333991642	0.239939
way	isap:251368265	0.231041
percentage	isap:504798534	0.229993
comparison	isap:505340919	0.228535
resource	isap:379360591	0.228246
question	isap:384066710	0.228205
hydropower	isap:505966329	0.225914
transport	isap:152143091	0.223962
dirtiest	isap:383886790	0.223008
lpg	isap:249292369	0.220013
burned	isap:498689832	0.214748
europe	isap:490709011	0.209389
feedstock	isap:148004217	0.209175
factory	isap:71098480	0.209173
year	isap:178258085	0.205060
power	isap:203997736	0.204642
bad	isap:251879665	0.204071
heating	isap:70917127	0.197000
flood	isap:197704099	0.195797
concentration	isap:146486194	0.194998
natga	isap:203254441	0.192962
sun	isap:250183362	0.192517
etc	isap:247043592	0.192177
extraction	isap:503877532	0.191383
situation	isap:149584188	0.191278
germany	isap:75120485	0.184810
plant	isap:200352296	0.179807
action	isap:491688386	0.179663
demand	isap:500684419	0.179022
quebec	isap:494589637	0.174616
transition	isap:503336363	0.173863
effect	isap:494721536	0.170230
future	isap:491701871	0.170066
well	isap:176509493	0.167714
utility	isap:71362818	0.167691
business	isap:377199035	0.166031
technology	isap:505008510	0.164491
amount	isap:491349447	0.163305
application	isap:355136178	0.163259
need	isap:173282648	0.162658
regard	isap:493829538	0.159923
corporation	isap:356198742	0.159532
however	isap:72684491	0.156312
not	isap:249423741	0.155150
right	isap:199433842	0.150304
environment	isap:354385897	0.149614
tax	isap:247745778	0.149246
world	isap:197024537	0.147155
state	isap:200826754	0.143339
everyone	isap:382096858	0.140038
no	isap:332894688	0.137975
example	isap:73670343	0.130566
contract	isap:378391517	0.130043
ability	isap:75153114	0.122797
answer	isap:499587026	0.118503
ground	isap:494511297	0.117686
that	isap:177136382	0.116455
co2	isap:249548834	0.111181
thing	isap:199513616	0.109636
issue	isap:204419920	0.106003
usage	isap:194606383	0.102783
out	isap:247503837	0.098245
place	isap:196744340	0.096532
benefit	isap:78234695	0.091072
topic	isap:194552518	0.081935
cc	isap:332583359	0.052999