Reforestation means planting trees in areas where forests once grew but have been cut down or destroyed. When loggers clear a forest for timber, when wildfires burn through woodland, or when farmers clear land for crops, reforestation is the process of bringing those forests back.

Think of it like replanting a garden after it's been trampled or cleared. Forest managers and environmental groups plant thousands of young seedlings, which over decades grow into towering trees that provide homes for wildlife, clean the air, and prevent soil erosion.

Reforestation is different from afforestation, which means planting forests in places that never had them before. Reforestation specifically focuses on restoring what was lost. After the Dust Bowl in the 1930s, massive reforestation projects helped protect the soil. Today, many countries run reforestation programs to combat climate change, since growing trees absorb carbon dioxide from the atmosphere.

Some reforestation happens naturally when land is left alone and trees gradually return, but most reforestation requires human effort: carefully selecting tree species, planting them at the right time, and protecting young trees until they're strong enough to thrive on their own.