- The forest biomes have been evolving for about 420 million years
- Today, forests occupy about 1/3 of Earth's land area
- tropical
- temperate
- boreal (taiga)
- Forests are home to a diversity of plants, some of which may hold medicinal qualities for humans, as well as thousands of animal species, some still undiscovered
- Forests can also absorb carbon dioxide a greenhouse gas, and give off oxygen