If alien civilizations exist, could we spot their industrial footprints in space?

French adventurer Jean-Jacques Savin, 71, sets off on voyage across the Atlantic in a barrel

PSA: How to watch coverage of mission activities if the US government is still shut down during the New Horizons’ Ultima Thule flyby

Video: Aliens under the Ice – Life on Rogue Planets

What Defines a Stem Cell?

Shocking Stories of Survival

Explorer completes historic Antarctic trek

How Much of the Internet Is Fake? Turns Out, a Lot of It, Actually.

As Light Pollution Spreads, National Parks Become Stargazing Sanctuaries

How many dimensions are there, and what do they do to reality?

The Complete History of the Autopsy

Go behind the scenes of NASA’s farthest-ever flyby mission

The Way American Parents Think About Chores Is Bizarre

One Giant Step for a Chess-Playing Machine

At 14, She Hunts Wolves and Takes Selfies With Cherished Eagle in Mongolia

Artificial Intelligence Creates Realistic Photos of People, None of Whom Actually Exist

How a Reclusive Lizard Became a Prize Find for Wildlife Smugglers

The Serial Killer and the ‘Less Dead’

Altering Memories to Treat Drug Addiction

“People have complained about the excessive commercialization of Christmas ever since its incarnation in the mid-19th century”

Chestnut-killing wasp threatens major harvest

How the creative team behind Anthony Bourdain’s TV show came together to finish his story after his death

Interactive: Life and Death of a Planetary System

Mind-Bending Study Suggests Time Did Actually Exist Before The Big Bang

On This Day in Space! Dec. 25, 2004: Cassini Spacecraft Deploys Huygens Probe Above Titan

Lost at sea, their food was running low. Then a cruise ship appeared.

Study brings us one step closer to solving 1994 thallium poisoning case

16 Decades of Atlantic Christmases

First developed by Canada’s indigenous peoples, spruce beer was commonly used to prevent scurvy

Human blood cells can be directly reprogrammed into neural stem cells

Incessant repetition of holiday music can have a psychological impact

Earthrise: how the iconic image changed the world

The mysterious government organization that pops up at moments of financial crisis

Why We Will Not Have Been Able to Attend Stephen Hawking’s Time Traveler Party

Inside NASA’s Wildly Complex Plan to Navigate Jupiter’s Asteroid Fields

The Sicilian banker who left the City to fight the mafia

Sydney’s new 36-storey Opal Tower evacuated after cracks appear

Large molecules show Enceladus “clearly is habitable for life”

Indonesia tsunami caused by collapse of volcano, experts confirm

USA: How Your State Makes Electricity

The salvagers who raise World War Two tanks from the dead

James Ellroy: Cracking the Case of Murdered Actor Sal Mineo

Archaeologists find remains of horses in ancient Pompeii stable

Photos: Deadly Tsunami Strikes Indonesia’s Sunda Strait

A Brief History of the Snow Globe

What Happens When a World Order Ends

Tibet Is Going Crazy for Hoops

A desert explosion helps scientists plan earthquake-detecting balloons on Venus

Why American cities are so weirdly shaped

A New Class of ‘Light’ Super-Earth May Be Heavy in Rubies and Sapphires

The mathematics of malaria

The science stories that shook 2018

The Lunar Farside and the Cosmic Dark Age

Why Exaggeration Jokes Work

Indonesia tsunami: How a volcano can be the trigger

Chinese scientists turn copper into ‘gold’

Emperor Akihito: Huge crowds as Japan monarch gives emotional farewell

How Hitler Nearly Destroyed the Great American Novel

When the Christmas Plant Was a Pepper, Not a Poinsettia

Christmas ‘Hippo’ Asteroid Is Buzzing Earth, Its Closest Flyby in 400 Years