Physics & Astronomy
air
5%
astronauts
13%
atmospheres
20%
biomass
12%
cables
9%
closed ecological systems
100%
concentrators
10%
crews
13%
crops
42%
energy
2%
estimates
5%
food
10%
greenhouses
65%
hydroponics
19%
life support systems
51%
mars
55%
Mars missions
15%
membranes
6%
oxygen
5%
prototypes
37%
recycling
42%
solar system
9%
space missions
11%
support systems
12%
vegetables
13%
water
16%
Earth & Environmental Sciences
air
4%
analysis
2%
atmosphere
13%
biological processes
7%
biomass
4%
cable
8%
chemical
3%
crop
5%
crop production
17%
cropping practice
7%
dietary intake
10%
energy
3%
food
5%
food production
8%
hydroponics
10%
Mars
43%
membrane
5%
organic waste
8%
oxygen
5%
power generation
8%
production system
8%
program
4%
recycling
18%
solar power
10%
solar system
8%
vegetable
8%
waste recycling
9%
water
7%
Engineering & Materials Science
Air
4%
Biomass
7%
Cables
6%
Crops
26%
Dynamical systems
6%
Earth (planet)
6%
Energy Intake
12%
Greenhouses
57%
Lunar missions
11%
Membranes
6%
NASA
21%
Oxygen
6%
Power generation
6%
Recycling
7%
Solar concentrators
11%
Solar system
9%
Vegetables
10%
Water recycling
39%