Earth & Environmental Sciences
agriculture
9%
alternative energy
12%
biofuel production
66%
cost
6%
decision
8%
effect
15%
energy
6%
energy market
17%
energy policy
15%
ethanol
62%
farm
33%
greenhouse gas emissions
11%
industry
8%
livelihood
12%
livestock
12%
loss
7%
maize
11%
market
9%
panel data
16%
price
21%
productivity
45%
resource
7%
transition
8%
Engineering & Materials Science
Agriculture
14%
Beef
100%
Biofuels
59%
Costs
5%
Energy policy
15%
Ethanol
66%
Farms
38%
Gas emissions
13%
Greenhouse gases
13%
Industry
5%
Productivity
52%
Renewable energy resources
10%
Social Sciences
agriculture
11%
biofuel
63%
costs
7%
energy
18%
energy policy
13%
farm
36%
industry
7%
interconnection
13%
livelihood
12%
market
14%
producer
56%
production process
14%
productivity
54%
resources
5%