Earth Sciences & Environment

Alphabetical:

acidification   (5751 occurrences)
agriculture   (5703 occurrences)
animal production   (5249 occurrences)
animal species   (5582 occurrences)
antarctica   (2730 occurrences)
Atlantic Ocean   (1766 occurrences)
bee pollination   (320 occurrences)
biodiesel   (1816 occurrences)
biodiversity   (5780 occurrences)
biofuels   (1495 occurrences)
biogas   (1931 occurrences)
biogeochemical cycles   (529 occurrences)
bird species   (4913 occurrences)
carbon balance   (2850 occurrences)
carbon cycle   (5080 occurrences)
carbon dioxide exchange   (8847 occurrences)
carbon emissions   (2921 occurrences)
carbon flux   (3513 occurrences)
carbon sequestration   (1250 occurrences)
carbon storage   (3632 occurrences)
carbon uptake   (5139 occurrences)
climate change   (5803 occurrences)
climate science   (601 occurrences)
CO2   (8695 occurrences)
coal emissions   (878 occurrences)
coastal storms   (59 occurrences)
continental shelf   (544 occurrences)
conventional crops   (573 occurrences)
cookstoves   (46 occurrences)
coral reef   (1909 occurrences)
crops   (5733 occurrences)
cyanobacteria   (5616 occurrences)
cyclones   (219 occurrences)
dairy farms   (2980 occurrences)
drought   (5326 occurrences)
droughts   (461 occurrences)
drylands   (76 occurrences)
earthquakes   (1163 occurrences)
ecological research   (5063 occurrences)
ectotherms   (586 occurrences)
emissions   (7781 occurrences)
energy conservation   (2802 occurrences)
environment   (9494 occurrences)
evolutionary history   (5610 occurrences)
farming   (5396 occurrences)
fishes   (6478 occurrences)
flooding   (3039 occurrences)
floods   (910 occurrences)
food waste   (1782 occurrences)
forest ecosystems   (1620 occurrences)
freshwater   (8342 occurrences)
gastropod   (1511 occurrences)
genetically modified   (5998 occurrences)
geothermal   (601 occurrences)
glaciology   (9 occurrences)
global change   (5243 occurrences)
global cooling   (539 occurrences)
global warming   (2962 occurrences)
GM crop   (240 occurrences)
GM crops   (414 occurrences)
GMO   (508 occurrences)
grass prairie   (137 occurrences)
grassland   (2725 occurrences)
Great Barrier Reef   (1880 occurrences)
green energy   (4402 occurrences)
Greenland   (1806 occurrences)
halocarbons   (180 occurrences)
hemp cultivation   (17 occurrences)
honey bee   (1888 occurrences)
human activity   (9565 occurrences)
hurricanes   (493 occurrences)
hydrologic cycle   (84 occurrences)
ice caps   (69 occurrences)
ice sheets   (313 occurrences)
incinerators   (718 occurrences)
Indian Ocean   (1442 occurrences)
invertebrate   (5852 occurrences)
iron cycling   (759 occurrences)
irrigation   (5974 occurrences)
jetstream   (12 occurrences)
lakes   (5336 occurrences)
landfill   (3212 occurrences)
life cycle   (6713 occurrences)
livestock   (5670 occurrences)
marine life   (2211 occurrences)
marshland   (142 occurrences)
melting glaciers   (54 occurrences)
methane emissions   (1019 occurrences)
methanogenic pathways   (136 occurrences)
monsoons   (74 occurrences)
mycellium   (12 occurrences)
N2O emissions   (382 occurrences)
native bees   (115 occurrences)
nitrogen fixation   (3738 occurrences)
Northern Hemisphere   (1983 occurrences)
nuclear fuel   (863 occurrences)
nuclear reactor   (853 occurrences)
nuclear waste   (985 occurrences)
ocean acidification   (379 occurrences)
ocean currents   (337 occurrences)
oceanography   (227 occurrences)
oil reservoirs   (219 occurrences)
oil spill   (1045 occurrences)
organic agriculture   (845 occurrences)
organic crops   (801 occurrences)
organic farming   (676 occurrences)
oscillation   (6134 occurrences)
ozone   (6760 occurrences)
ozone layer   (658 occurrences)
Pacific Ocean   (2163 occurrences)
paddy fields   (480 occurrences)
peatmosses   (5 occurrences)
photobioreactor   (366 occurrences)
plant restoration   (770 occurrences)
pollen   (7099 occurrences)
pollinators   (1667 occurrences)
pollution   (8274 occurrences)
power plants   (2480 occurrences)
precipitation   (6876 occurrences)
rainforest   (1379 occurrences)
recycling   (6882 occurrences)
rock weathering   (181 occurrences)
salt marshes   (385 occurrences)
sea levels   (5101 occurrences)
sea-level   (4281 occurrences)
seasonal change   (3309 occurrences)
soil   (8843 occurrences)
soil amendments   (1002 occurrences)
soil microbes   (1100 occurrences)
soil moisture   (2683 occurrences)
soil remediation   (2128 occurrences)
solar cells   (5522 occurrences)
solar radiation   (4908 occurrences)
Southern Hemisphere   (1315 occurrences)
species migration   (5027 occurrences)
stratosphere   (597 occurrences)
stratospheric   (982 occurrences)
stratospheric ozone   (602 occurrences)
summer   (6272 occurrences)
temperature fluctuations   (4670 occurrences)
thermal adaptation   (1243 occurrences)
thermal clines   (44 occurrences)
tidal wave   (376 occurrences)
topsoil   (784 occurrences)
tropical   (8429 occurrences)
tropical lizards   (67 occurrences)
tundra   (619 occurrences)
UV-A radiation   (5702 occurrences)
warm season   (952 occurrences)
waste management   (3453 occurrences)
water   (9360 occurrences)
water conservation   (2191 occurrences)
water splitting   (1509 occurrences)
weather   (5305 occurrences)
weather control   (932 occurrences)
weather extremes   (92 occurrences)
wetlands   (2984 occurrences)
winter   (7061 occurrences)

By Popularity:

human activity   (9565 occurrences)
environment   (9494 occurrences)
water   (9360 occurrences)
carbon dioxide exchange   (8847 occurrences)
soil   (8843 occurrences)
CO2   (8695 occurrences)
tropical   (8429 occurrences)
freshwater   (8342 occurrences)
pollution   (8274 occurrences)
emissions   (7781 occurrences)
pollen   (7099 occurrences)
winter   (7061 occurrences)
recycling   (6882 occurrences)
precipitation   (6876 occurrences)
ozone   (6760 occurrences)
life cycle   (6713 occurrences)
fishes   (6478 occurrences)
summer   (6272 occurrences)
oscillation   (6134 occurrences)
genetically modified   (5998 occurrences)
irrigation   (5974 occurrences)
invertebrate   (5852 occurrences)
climate change   (5803 occurrences)
biodiversity   (5780 occurrences)
acidification   (5751 occurrences)
crops   (5733 occurrences)
agriculture   (5703 occurrences)
UV-A radiation   (5702 occurrences)
livestock   (5670 occurrences)
cyanobacteria   (5616 occurrences)
evolutionary history   (5610 occurrences)
animal species   (5582 occurrences)
solar cells   (5522 occurrences)
farming   (5396 occurrences)
lakes   (5336 occurrences)
drought   (5326 occurrences)
weather   (5305 occurrences)
animal production   (5249 occurrences)
global change   (5243 occurrences)
carbon uptake   (5139 occurrences)
sea levels   (5101 occurrences)
carbon cycle   (5080 occurrences)
ecological research   (5063 occurrences)
species migration   (5027 occurrences)
bird species   (4913 occurrences)
solar radiation   (4908 occurrences)
temperature fluctuations   (4670 occurrences)
green energy   (4402 occurrences)
sea-level   (4281 occurrences)
nitrogen fixation   (3738 occurrences)
carbon storage   (3632 occurrences)
carbon flux   (3513 occurrences)
waste management   (3453 occurrences)
seasonal change   (3309 occurrences)
landfill   (3212 occurrences)
flooding   (3039 occurrences)
wetlands   (2984 occurrences)
dairy farms   (2980 occurrences)
global warming   (2962 occurrences)
carbon emissions   (2921 occurrences)
carbon balance   (2850 occurrences)
energy conservation   (2802 occurrences)
antarctica   (2730 occurrences)
grassland   (2725 occurrences)
soil moisture   (2683 occurrences)
power plants   (2480 occurrences)
marine life   (2211 occurrences)
water conservation   (2191 occurrences)
Pacific Ocean   (2163 occurrences)
soil remediation   (2128 occurrences)
Northern Hemisphere   (1983 occurrences)
biogas   (1931 occurrences)
coral reef   (1909 occurrences)
honey bee   (1888 occurrences)
Great Barrier Reef   (1880 occurrences)
biodiesel   (1816 occurrences)
Greenland   (1806 occurrences)
food waste   (1782 occurrences)
Atlantic Ocean   (1766 occurrences)
pollinators   (1667 occurrences)
forest ecosystems   (1620 occurrences)
gastropod   (1511 occurrences)
water splitting   (1509 occurrences)
biofuels   (1495 occurrences)
Indian Ocean   (1442 occurrences)
rainforest   (1379 occurrences)
Southern Hemisphere   (1315 occurrences)
carbon sequestration   (1250 occurrences)
thermal adaptation   (1243 occurrences)
earthquakes   (1163 occurrences)
soil microbes   (1100 occurrences)
oil spill   (1045 occurrences)
methane emissions   (1019 occurrences)
soil amendments   (1002 occurrences)
nuclear waste   (985 occurrences)
stratospheric   (982 occurrences)
warm season   (952 occurrences)
weather control   (932 occurrences)
floods   (910 occurrences)
coal emissions   (878 occurrences)
nuclear fuel   (863 occurrences)
nuclear reactor   (853 occurrences)
organic agriculture   (845 occurrences)
organic crops   (801 occurrences)
topsoil   (784 occurrences)
plant restoration   (770 occurrences)
iron cycling   (759 occurrences)
incinerators   (718 occurrences)
organic farming   (676 occurrences)
ozone layer   (658 occurrences)
tundra   (619 occurrences)
stratospheric ozone   (602 occurrences)
climate science   (601 occurrences)
geothermal   (601 occurrences)
stratosphere   (597 occurrences)
ectotherms   (586 occurrences)
conventional crops   (573 occurrences)
continental shelf   (544 occurrences)
global cooling   (539 occurrences)
biogeochemical cycles   (529 occurrences)
GMO   (508 occurrences)
hurricanes   (493 occurrences)
paddy fields   (480 occurrences)
droughts   (461 occurrences)
GM crops   (414 occurrences)
salt marshes   (385 occurrences)
N2O emissions   (382 occurrences)
ocean acidification   (379 occurrences)
tidal wave   (376 occurrences)
photobioreactor   (366 occurrences)
ocean currents   (337 occurrences)
bee pollination   (320 occurrences)
ice sheets   (313 occurrences)
GM crop   (240 occurrences)
oceanography   (227 occurrences)
oil reservoirs   (219 occurrences)
cyclones   (219 occurrences)
rock weathering   (181 occurrences)
halocarbons   (180 occurrences)
marshland   (142 occurrences)
grass prairie   (137 occurrences)
methanogenic pathways   (136 occurrences)
native bees   (115 occurrences)
weather extremes   (92 occurrences)
hydrologic cycle   (84 occurrences)
drylands   (76 occurrences)
monsoons   (74 occurrences)
ice caps   (69 occurrences)
tropical lizards   (67 occurrences)
coastal storms   (59 occurrences)
melting glaciers   (54 occurrences)
cookstoves   (46 occurrences)
thermal clines   (44 occurrences)
hemp cultivation   (17 occurrences)
mycellium   (12 occurrences)
jetstream   (12 occurrences)
glaciology   (9 occurrences)
peatmosses   (5 occurrences)