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Skywatch: What’s happening in the heavens in April

As Mount Everest glaciers melt, dead bodies of climbers emerge

A festival that shows how to combine technology, creativity and innovation

Fossil Site Reveals Day That Meteor Hit Earth and, Maybe, Wiped Out Dinosaurs

Fossils show world-wide catastrophe on the day the dinosaurs died

Amphibian apocalypse is twice as bad as scientists thought

Climate change is already hurting fruit breeders, and consumers could soon feel the pain

Want to rescue a dog from overseas? It might carry a new strain of disease, researchers say.

A family rescued a dog from certain death. Years later, he died saving their lives in a shooting.

Florida neighborhood besieged by thousands of poisonous toads ‘covering every square inch’

We once hunted and ate robins. Now the birds are a colorful harbinger of spring

What does a rocket launch sound like? What did Neil Armstrong really say? NASA lets you hear.

How Mosquitoes Sniff Out Your Sweat

Injecting Marshmallow Peeps With Fungi, for Science

Volcanoes! Lightning! And Radioactive Gas, Too

A Crew of Mini-Moons That Sculpts Saturn’s Rings

The Plague Killing Frogs Everywhere Is Far Worse Than Scientists Thought

Scientists Say a Canadian T. Rex ‘Scotty’ Is Heaviest Found

A helicopter landed in a California poppy field during the super bloom, and officials are furious

NASA’s first all-female spacewalk isn’t happening. Blame a wardrobe malfunction.

Spinning Water Droplets That Defy Physics

This Water Drop, It’s the Greatest Dancer

When Sky & Telescope Had No Limit

NASA Cancels First All-Female Spacewalk Over Spacesuit Sizes

A Colonial-Era Cemetery Resurfaces in Philadelphia

Why Would an Animal Trade One Body for Another?

How Diamonds Gain Color

The Northern Lights Are Expected in the Northern U.S., but Don’t Get Too Excited

Omura’s Whale

An Elusive Whale Is Found All Around the World

Sun Bear See, Sun Bear Do

Trigger Warnings May Not Do Much, Early Studies Suggest

A.I. Can Improve Health Care. It Also Can Be Duped.

DNA Clues to an Ancient Canary Islands Voyage

Chop Up a Worm. It Will Regenerate. Scientists Figured Out Why.

The smallest and farthest worlds ever explored by NASA are really, really weird

Osiris-Rex Finds Plumes on Asteroid Bennu

Neptune’s Moon Triton Is Destination of Proposed NASA Mission

Tales of 2 Rugged Asteroids and 1 Is Spewing Debris Into Space

Trump’s budget slashes science. Here’s what would be lost.

Karen Uhlenbeck Is First Woman to Receive Abel Prize in Mathematics

Moving Dung Is a Dirty Job. These Beetles Live for It.

How Ultima Thule Is Like a Sticky, Pull-Apart Pastry

Honey as a Pollution Detector? It’s a Sweet Idea

Space Is Very Big. Some of Its New Explorers Will Be Tiny.

This Songbird Is Nearly Extinct in the Wild. An International Treaty Could Help Save It — but Won’t.

Birth order doesn’t shape personality after all

The Story of the Iberian Peninsula, Told in DNA

How Pi Made Us Modern

A NASA Journey to the Moon May Need to Find Another Rocket or Two