In 1997, Julia Hill started a tree sit in a California redwood to protest logging efforts. For 738 days, Hill lived on two platforms in cramped, windy, and wet conditions. She ultimately reached ...

Cavity trees, dead standing trees, and downed dead trees create habitat for many species of mammals, birds, insects, amphibians, and reptiles, which positively impacts the rest of the ecosystem.

Caption: Fu Zhizhou and his wife Chen Ailan plant trees in Haermodun village of Hejing county, within the Mongolian ...