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Need a Home for 80,000 Puzzles? Try an Italian Castle.

ChatGPT Helps, and Worries, Business Consultants, Study Finds

The First Secret Asteroid Mission Won’t Be the Last

These Vets Make House Calls for Killer Whales

How to Create a Black Hole Out of Thin Air

What Lies Beneath the Vatican of the Zapotecs?

The Year the Leaf-Cutter Ants Took Manhattan

Ever Want to Curl Into a Ball? Here’s How Trilobites Did It.

Watch the Geminids Meteor Shower Reach Its Peak Tonight

There Are Ghosts High Above Us, With Colors That Come From Space

How NASA Learned to Love 4 Squirmy Letters

What Can You Do With an Einstein?

A Tyrannosaur Was Found Fossilized, and So Was Its Last Meal

Genes That Boost Fertility Also Shorten Our Life, Study Suggests

Once They Were Pets. Now Giant Goldfish Are Menacing the Great Lakes.

Particle Physicists Offer a Road Map for the Next Decade

3 Laser Fusion Research Hubs Picked by Energy Department

Rare Giant Rat Is Photographed Alive for First Time

Mars Needs Insects

A Fish That Fishes for Other Fish Lives Its Life Upside Down

Mucus-Covered Jellyfish Hint at Dangers of Deep-Sea Mining

Why Warblers Flock to Wealthier Neighborhoods

Mysterious Respiratory Illness Affects Dogs in Multiple States

Watch the Leonids Meteor Shower Reach Its Peak This Weekend

Start-Ups With Laser Beams: The Companies Trying to Ignite Fusion Energy

How the T. Rex Built Up That Bone-Crushing Bite

An Expedition Finds a ‘Lost’ Mammal and a Shrimp That Lives in Trees

Frank Borman, Astronaut Who Led First Orbit of the Moon, Dies at 95

Male-Killing Virus Is Discovered in Insects

This Ancient Sea Creature Prowled the Waters Over North Dakota

To Wear the Sudoku Crown, One Must Solve Any Number of Puzzles

A Giant Leap for the Leap Second. Is Humankind Ready?

Ken Mattingly, Astronaut Scrubbed From Apollo 13, Is Dead at 87

NASA’s Lucy Mission Set Its Sights on 1 Asteroid. It Found 2.

A ‘Big Whack’ Formed the Moon and Left Traces Deep in Earth, a Study Suggests

Birds in the Americas Will No Longer Be Named After People

Fruit Flies Are Invading Los Angeles. The Solution? More Fruit Flies.

6 Great Space Images in October

Now Showing, an Ancient Spell Book for the Dead

These Tiny, Beautiful Wasps Eat the Hearts Out of Cockroaches

Old Faithful Is Boiling, Smelly and the Perfect Home for These Living Things

A Radioactive Sea of Magma Hides Under the Surface of Mars

How Aid in Dying Became Medical, Not Moral

See You Later, Not-an-Alligator

Stone by Ancient Stone, Mexico Recovers Its Lost Treasures

These Starfish Face Extinction. Scientists Are Helping Them Mate.

The Holmdel Horn, a Cosmic Shrine in New Jersey, Stays Put

Watch the Orionids Meteor Shower Reach Its Peak Tonight

Lab Leak Fight Casts Chill Over Virology Research

Robert Sapolsky Doesn’t Believe in Free Will. (But Feel Free to Disagree.)