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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