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The New Science of Stuttering

JACK TAMISIEA

Experts are reaching consensus on what the condition is. Now they’re debating how best to treat it.

Tree Pandemics

Species after species, American trees are suffering one devastating epidemic after another, unleashed by insects and bacteria that enter the country because of global trade.

How Did Life Arise? Three Turning Points in Early Evolution

WILLIAM J. BROAD, KENNETH CHANG AND CARL ZIMMER

Where did it start? How did it grow complex? Why did it get big? Three moments in Earth’s early history when evolution suddenly, inexplicably turned up the dial.

A Japanese Spacecraft Aims to Bring Back a Bit of a Martian Moon

KENNETH CHANG

The mission, scheduled to launch on Monday, is headed to Phobos, the larger of the two moons of Mars. It could carry back the first samples from the Martian system.

The mechanics of honeybee stingers, microplastic health risks and new findings on postmenopausal ovaries

New research reveals how bee stingers work, why microplastics may be harmful and what postmenopausal ovaries are doing decades later

The first mission to sample Mars’s moons launches today

For the first time ever, a spacecraft will travel all the way to the Mars system and return. But first, it has to get through the launch

Biohackers say this supplement lets you drink coffee at night. No one knows if it’s safe

Rutaecarpine is touted as a fix to rapidly flush caffeine out of the body, but it may be toxic when mixed with Tylenol