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What Is an Aortic Dissection?

GINA KOLATA

The condition that killed Senator Lindsey Graham is deadly, sudden and difficult to treat — “like a knife to the back,” one expert said.

‘We’re Fighting Satan’: The War to Save Bees From a Hornet Invasion

JACK TAMISIEA AND SEAN RAYFORD

As yellow-legged hornets spread through South Carolina’s Lowcountry region, threatening the local honey crop, a state team of bee defenders is racing to the rescue.

Years After He Quit Smoking, a Lung Cancer Scan Saved His Life

PAULA SPAN

Lung cancer remains the leading cause of cancer deaths in the United States and older adults are at higher risk. But only about a quarter of patients eligible for screening are up-to-date.

Mathematicians still don’t know the fastest way to multiply numbers

A 23-year-old student overturned an ancient conjecture about one of math's simplest operations

Scientists catch bacteria sharing proteins to survive antibiotics

Bacteria send protein packages to dormant neighbors to endure antibiotic attack

Scientists spot sugar in interstellar space for the first time ever

Erythrulose—a sugar found in raspberries—is also prevalent in a giant molecular cloud close to our galaxy's core, scientists have discovered

Scientists overwhelmingly against rule change that would give political appointees say over science grants

Hundreds of thousands of scientists, including Nobel laureates, warn that changes to the way federal grants are approved would greatly damage American science

Kids Can’t Stop Watching ‘Moana.’ There’s a Scientific Explanation.

SARAH BAHR

The 2016 release has become the most watched movie on Disney+. Parents and experts explain why kids can’t get enough.

We finally know the name of a Maya mathematician

The signature of Sak Tahn Waax, or "White-Chested Fox," was found inscribed in a 1,000-year-old chamber beneath present-day Guatemala

Why have their been so many record-breaking heat waves this summer?

Record-breaking heat waves are beginning to blur together—here's why and what's making them so unbearable

Trump Sharply Cuts the Size of Two National Monuments in Utah

MAXINE JOSELOW

Native American tribes and environmental groups are expected to challenge the move to shrink the Bears Ears and Grand Staircase-Escalante National Monuments.

A Sweet Surprise: Scientists Find Sugar Deep in Our Galaxy

REBECCA DZOMBAK

It’s the first time a sugar molecule has been detected in interstellar space. The discovery provides tantalizing new clues into how life may have arisen on Earth.