Go green with environmental science trivia on renewable energy, biodiversity, conservation, pollution, and sustainability. From climate systems to the policies protecting wild places, understanding our environment has never mattered more. Do your part and see if your eco knowledge can save the day.

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These dense, tropical forests near the equator are home to more than half of all species on Earth despite covering only 6% of land.
The "three Rs" of waste management—reduce, reuse, and this third action—encourage consumers to process materials into new products.
Organic materials like wood chips, agricultural waste, and plant matter used to generate energy are collectively called this.
This black and white bear from China has become the global symbol for wildlife conservation.
This global warming gas, produced by burning fossil fuels and deforestation, is the primary driver of human-caused climate change.
This renewable energy taps into heat stored beneath Earth's surface to generate electricity or provide direct heating.
When a species completely dies out and no living members remain anywhere on Earth, it has reached this state.
These large ocean garbage patches, including one in the Pacific twice the size of Texas, are primarily composed of this material.