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Animals

Among mammals, males aren’t usually bigger than females

In a study of more than 400 mammal species, less than half have males that are heavier than females.

Earth

Scientists Say: Supercontinent

These gigantic landmasses form when much of Earth’s landmass smashes together.

Artificial Intelligence

A new tool could guard against deepfake voice scams

Scammers can use AI to create deepfake mimics of people’s voices. AntiFake could make that type of trick much harder to pull off.

Health & Medicine

A new type of immune cell may cause lifelong allergies

These special memory cells were present in people with allergies and absent in those without.

Microbes

What the weird world of protists can teach us about life on Earth

Microbes vastly outnumber multicellular life on Earth. A close-up look at protists highlights how much we don't know about the microscopic world.

Artificial Intelligence

AI learned how to influence humans by watching a video game

New research used the game Overcooked to show how AI can learn to collaborate with — or manipulate — us.

Animals

Let’s learn about animals’ bizarre sleep schedules

From reindeer that snooze while chewing to penguins that take thousands of naps each day, the animal kingdom has some truly weird sleep patterns.

Space

Explainer: What is the solar cycle?

Here’s what causes the sun’s 11-year cycle of activity and what it means for us on Earth.

Space

Scientists Say: Corona

The sun’s corona can only be seen without special instruments during a total solar eclipse.