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NASA astronaut Mark Vande Hei and Russian cosmonauts safely return to Earth

Russian cosmonauts hand control of ISS to U.S. team

Ice Volcanoes Reshape Pluto and Hint at a Hidden Ocean

Does Social Media Make Teens Unhappy? It May Depend on Their Age.

Africa’s low Covid death rates are a mystery. There are some theories, though.

U.S. cities will lose over 1.4 million street trees to insects by 2050

Black adults were hospitalized at higher rates than whites during the U.S. Omicron wave.

People shrug over flu. Will they soon be shrugging about Covid?

Russia’s astronauts enter the space station in yellow and blue flight suits.

Pete Davidson No Longer Going to Space, Blue Origin Says

As virus data grows, the J.&J. vaccine holds its own.

Cannibalistic Toads Reveal ‘Evolution in Fast Motion,’ Study Finds

As virus data grows, the J.&J. vaccine holds its own.

Pig sounds are associated with emotions, scientists found

Turtle Nesting Season Is Back in Florida

Sharks Sleep, Even When Both Eyes Are Wide Open

The W.H.O. strengthens its booster endorsement but still emphasizes getting primary shots to more people.

Finding a Retirement Home for 466 Frozen Flatworm Fragments

‘Aseismic’ creeping part of California fault once hosted huge earthquakes

Fossil Reveals Secrets of One of the Nature’s Most Mysterious Reptiles

Wildlife Personalities Play a Role in Nature

Why Don’t All Lions Climb Trees?

Here’s how the coronavirus steals the sense of smell.

Meet the Spongy Moth, Whose Old Name Contained an Offensive Term