Which U.S. senator is credited with founding Earth Day?

What is the primary gas responsible for climate change?

Which of these energy sources is non-renewable?

Which country produces the most carbon dioxide emissions?

What does the "3 R's" stand for in environmental conservation?

How long does it take for a plastic bottle to decompose in a landfill?

What type of animal is most affected by plastic pollution in the oceans?

What U.S. law, passed in 1970, is considered one of the most important for regulating pollution and protecting air quality?

Which international agreement, adopted in 2015, aims to combat climate change by limiting global warming?