Forest

A massive nature preserve exists inside one of the world's largest megacities, and it's continued existence is vital to the urban area's water supplies and ecosystems.

• By Christine MacDonald

John Mganga walks through a forest at night near his former workplace, the Amani Hill Research Station.

• By Pacific Standard Staff

A new study shows that droughts will cause massive die offs of the trembling aspen, a pillar of North American forests, by mid-century, unless we take action on climate change today.

• By Kate Wheeling