What Is an “Almost Prime” Number?

An astronaut explains why you can’t burp in space

Meet the Serial-Killer Whisperer

College Athlete Dies of Rare Bacterial Illness Called ‘Forgotten Disease’

Who was Guy Fawkes, the man behind the mask?

The Incredible Shrinking Planet

How a Tiny Flightless Bird Ended Up on an Island in the Middle of the Ocean

The Man Who Turns Back New York City’s Clocks, Hand by Hand

1 in 4 Statisticians Say They Were Asked to Commit Scientific Fraud

SpaceX’s ‘Starman’ and Its Tesla Roadster Are Now Beyond Mars

A new measurement bolsters the case for a (slightly) smaller proton

How to Encode a Secret Message in a Fingerprint

Can Science Bring Extinct Animals Back to Life?

30 years ago, the world’s first cyberattack set the stage for modern cybersecurity challenges

Why do we have daylight saving time? 100 years of history

The Galactic Collision That Reshaped Our Milky Way

Japanese island disappears, without anyone noticing

An Unfinished Orson Welles Film Finally Gets a Debut

The CIA’s communications suffered a catastrophic compromise. It started in Iran.

Slightly heavier than a toothpick, the first wireless insect-size robot takes flight

How Aladdin’s story was forged in Aleppo and Versailles

NASA Has a Wild Idea to Send 1 Probe to 7 Different Asteroids and It Could Launch In 2021

A journey to a Moroccan village frozen in time

Livestream: The naked mole-rat cam from Smithsonian’s National Zoo & Conservation Biology Institute

Watch a Famous Supernova Change Over 25 Years

The Violent Deaths of Giant Blue Stars May Spawn Exotic Matter

NASA’s Dawn Mission to Asteroid Belt Comes to End

How to Turbocharge the Flu Shot

Father of Web says tech giants may have to be split up

Image sequence: Hayabusa2 Ascends from Asteroid Ryugu

Jurassic Park for Perfume: Ginkgo Bioworks Reconstructs Scents From Extinct Plants

Hubble’s Law no more

As Insect Populations Decline, Scientists Are Trying to Understand Why

Dramatic footage of Soyuz accident shows rocket booster collision

The Storm. The Mountain. Every Parent’s Worst Nightmare.

The Pangolin Poacher

What 52,000 Percent Inflation Can Do to a Country

Why 30 Britons joined the Waco cult

Study: LSD changes the communication patterns between regions of the brain

My Grandfather Thought He Solved a Cosmic Mystery

NASA’s Planet-Hunting Kepler Space Telescope Is Done. What Will Happen to It?

Surprise find: Neanderthals show evidence of lead contamination

Man’s Bloody Tears Were Caused by This Rare Condition

Canada’s last witch trials: Women accused of fake witchcraft

The Masterless People: Pirates, Maroons, and the Struggle to Live Free

When #MeToo Came to Ancient Rome

The Time Bandits of Southern California

Doctors Retrieve Spoon from Man’s Esophagus — A Year After He Swallowed It

Study: Removal of the appendix is associated with a decreased risk of developing Parkinson’s disease

India prompts protests with unveiling of world’s biggest statue

Video: The Woman in the Iron Coffin [55:11]

How to Not Become a Zombie, Using Martial Arts

Most detailed observations of material orbiting close to a black hole

Giant flightless birds were nocturnal and possibly blind

Just How Fast Is the Parker Solar Probe? Astonishingly Fast

Russian official says Soyuz rocket failure caused by an errant sensor

Has new ghost particle manifested at Large Hadron Collider?

A Florida woman disappeared, but she never left home

A Vault of Glass and the Deepest Volcanic Eruption Ever Detected

Telescope Drama Could Thwart the Hunt for Extraterrestrial Life