Earth & Environmental Sciences
atmospheric pollution
59%
Africa
56%
exposure
43%
city
42%
commuting
40%
bus
35%
automobile
29%
pollution exposure
29%
taxis
14%
transportation system
13%
motor vehicle
12%
metropolis
12%
noise level
11%
black carbon
11%
particulate matter
9%
vehicle
8%
air
5%
particle
5%
Medicine & Life Sciences
Air Pollution
88%
Motor Vehicles
83%
Noise
70%
Automobiles
62%
Soot
27%
Particulate Matter
23%
Air
15%
Population
7%
Business & Economics
Air Pollution
86%
Africa
48%
Commuting
37%
Bus
34%
Car
26%
Particulate Matter
16%
Motor Vehicles
13%
Carbon
11%
Particles
9%
Air
8%
Social Sciences
commuter
95%
air pollution
83%
transportation system
13%
metropolis
12%
motor vehicle
10%
air
8%
Engineering & Materials Science
Air pollution
86%
Mass transportation
38%
Carbon black
31%
Air
13%
Chemical Compounds
Air Pollution
100%
Reduction
11%