Feature

Ecosystems

Beavers are engineering a new Alaskan tundra

Climate change has enabled the recent expansion of beavers into northwestern Alaska, a trend that could have major ecological consequences for the region in the coming decades.

Environment

Engineers are plugging holes in drinking water treatment

Drinking water quality has come a long way in the past hundred years — but challenges remain.

Ecosystems

How mammoths competed with other animals and lost

Mammoths, mastodons and other ancient elephants were wiped out at the end of the last ice age by climate change and spear-wielding humans.

Health & Medicine

Malaysia is ground zero for the next malaria menace

With deforestation in Malaysia, monkeys and humans are getting closer — and mosquitoes are infecting humans with malaria from monkeys.