Feature

Science & Society

Top 10 stories of 2018: Climate change, gene-edited babies, hidden craters and more

2018 was a year all about impact — on the planet, on solving crimes, on mosquito populations, on reversing paralysis, and more.

Health & Medicine

A gut-brain link for Parkinson’s gets a closer look

Early evidence suggests that Parkinson’s may be a gut disease that affects the brain.

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.