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Some probiotics could feed, rather than fend off, infections

The Webb space telescope spies its first black holes snacking on stars

Some U.S. newborns still get HIV despite efforts to screen for it. Here’s why

A new species of ‘penis worm’ was discovered in the Grand Canyon

Potatoes have their roots in ancient tomatoes

A Midwest ‘megaflash’ is the longest lightning on record

Why devastating tsunamis didn’t follow the Russia earthquake

A molecule produced by gut microbes may help spur heart disease

A quantum computer goes to space

Can AI ‘feel’ guilt?

Two colliding galaxies may have birthed this black hole

You may already have some protection from bird flu, but don’t count on it

Seeing sick faces may prime the immune system to repel invaders

Some killer whales hunt in pairs to maximize their bounty

Maggots may have been on the Neandertal menu

This desert beetle runs to cool off

AI is designing proteins that could help treat cancer

An injected gel could make drugs like Ozempic last longer

How many steps a day do you really need to take?

Climate change may be pushing fungal allergy season earlier

AI reveals new details about a famous Latin inscription

Forget discrete droplets. This is how sweat really forms

Screen addiction affects teens’ mental health. How to spot it, and help

U.S. measles outbreaks may end a hard-won victory over the virus

Betelgeuse’s companion star revealed in new images

This killer fungus strikes at sunset. Here’s how

Here’s how air pollution may trigger lung cancer

A summer of escalating existential threats

Readers wonder about quantum biology, babies’ memories and parrot speech

U.S. FDA may nix black box warning on some menopause estrogen treatments

A child’s biological sex may not always be a random 50-50 chance

‘Rehab’ exposes the dark underside of U.S. drug treatment centers

Math puzzle: Can you meet me at the mall?

What to know about the extreme U.S. flooding — and ways to stay safe

Some penguins save energy by riding ocean currents

A dog’s taste for TV may depend on its temperament

How hot can Earth get? Our planet’s climate history holds clues

A newly discovered cell helps pythons poop out the bones of their prey

How an ancient marine predator snuck up on its prey

This star offers the earliest peek at the birth of a planetary system like ours

No, shaken baby syndrome has not been discredited

In a first, an image shows a dying star exploded twice to become a supernova

Protein signatures may one day tell brain diseases apart before symptoms

Organ age, not just your birthday, may determine your health risks

Does the AI industry operate like a modern colonial empire?

How fast did dinosaurs really go? Birds walking in mud provide new clues

The biggest black hole smashup ever detected challenges physics theories

A newly discovered interstellar object might predate the solar system

Gut microbes may flush ‘forever chemicals’ from the body

New Horizons visited Pluto 10 years ago. We’re still learning from it