-
1:39
The Ocean Cleanup: plastics pollution -
coal emissions -
3:03
Canadian tar sand pollution -
3:32
Understand the effects of light pollution on the environment and humans -
California condor -
car and bus pollution -
1:43
air pollution -
3:56
air pollution -
acid rain -
ozone levels -
water pollution -
pollution: death of a lake -
industrial waste -
pesticide spraying -
garbage dump -
recycling plant -
grazing sheep -
InteractiveClimate Change: Sea Level Change -
Exxon Valdez oil spill