Give Now

A Moment of Science

Trees vs. Humans

Since the beginning of human civilization, Earth has lost half its trees.


There are approximately three trillion trees on Earth at the moment, according to a global tree census conducted by researchers at the Yale School of Forestry and Environmental Studies. That’s around 422 trees for every person on Earth!

But since human civilization began, the number of trees has fallen by about half.

America’s east coast and Midwest regions used to be basically one giant forest. But as farms, towns and cities developed, at least some of the forest had to be cut down.

At this point we’re losing around 15 billion trees every year due to human activity. And because trees absorb carbon dioxide and release oxygen, they play a major role in regulating climate. Trees are also important for maintaining soil and water quality.

So even though trillions of trees still exist, we have to be careful about depleting them too quickly.

Read More:

“Earth Lost Half Its Trees to Humans” (Yahoo)

Stay Connected

What is RSS? RSS makes it possible to subscribe to a website's updates instead of visiting it by delivering new posts to your RSS reader automatically. Choose to receive some or all of the updates from A Moment of Science:

Support for Indiana Public Media Comes From

About A Moment of Science

Search A Moment of Science