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This week in science: How much exercise you need, flu resistance and fortified foodDomino, the warty frogfish, is the first of its kind to be raised in captivityFor years, scientists could only prove that DOGS existed for 10,000 years — until now

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This week in science: How much exercise you need, flu resistance and fortified food
Science
NPR Topics: Science•Apr 2

This week in science: How much exercise you need, flu resistance and fortified food

NPR's science podcast Short Wave brings us stories on food fortification, why some people don't seem to get the flu, and a study on how much vigorous exercise you really need.

Domino, the warty frogfish, is the first of its kind to be raised in captivity
Science
NPR Topics: Science•Mar 31

Domino, the warty frogfish, is the first of its kind to be raised in captivity

This juvenile warty frogfish was raised in captivity at the Shedd Aquarium. Brenna Hernandez/Shedd Aquarium hide.

For years, scientists could only prove that DOGS existed for 10,000 years — until now
Science•NPR Topics: Science•Mar 30

For years, scientists could only prove that DOGS existed for 10,000 years — until now

For years, scientists could only prove that DOGS existed for 10,000 years — until now A new study genetically shows dogs existed almost 5,000 years earlier than scientists could prove. Science For years, scientists could only genetically prove that the first dogs existed about 10,000 years ago, but perhaps they were just barking up the wrong prehistoric tree. ANDERS BERGSTROM: We have confident genetic identification of dogs that lived at least 14,000 years ago in Europe.

3 min
Trump says he has 'no problem' with Russian oil tanker bringing relief to Cuba despite blockade
Business•NPR Topics: Business•Mar 30

Trump says he has 'no problem' with Russian oil tanker bringing relief to Cuba despite blockade

Journalists working for Cuban state media also reported the on the boat's expected arrival, though Cuban officials did not immediately respond to a request for comment. Trump on Sunday dismissed the idea that allowing the boat to reach Cuba would help Russian President Vladimir Putin.

3 min
Stuck in a long TSA line? Here are some strategies if you need to rebook your flight
Business•NPR Topics: Business•Mar 28

Stuck in a long TSA line? Here are some strategies if you need to rebook your flight

Extreme TSA lines at airports have left many passengers scrambling to rebook flights missed due to delays. But while airlines say they're helping flyers, they're not obligated to do so.

6 min
Scientists watch sperm whales work as a team to assist a birth
Science•NPR Topics: Science•Mar 27

Scientists watch sperm whales work as a team to assist a birth

The researchers launched two aerial drones and started filming. "We captured laboring and the moment that the fluke emerged from the mom," Gero said (whales are born tail-first). They used underwater microphones to record the whales clicking to each other beneath the water — their communication is the focus of Gero's work as lead biologist for Project CETI, a nonprofit whale research group.

4 min
War with Iran disrupts fertilizer exports as U.S. farmers prepare for planting season
Business•NPR Topics: Business•Mar 26

War with Iran disrupts fertilizer exports as U.S. farmers prepare for planting season

Matt Ubel, standing on his farm near Wheaton, Kansas, motions to the fertilizer spreader he'll use to spread urea fertilizer this spring. Frank.

5 min
Judge says government's Anthropic ban looks like punishment
Business•NPR Topics: Business•Mar 25

Judge says government's Anthropic ban looks like punishment

A federal judge in San Francisco said on Tuesday the government's ban on Anthropic looked like punishment after the AI company went public with its dispute with the Pentagon over the military's potential uses of its artificial intelligence model, Claude. Anthropic has filed two federal lawsuits alleging that this designation amounts to illegal retaliation against the company for its stance on AI safety. But she questioned whether the government broke the law when it banned its agencies from using Anthropic, and when Defense Secretary Pete Hegseth announced that anyone seeking business with the Pentagon must cut relations with Anthropic.

3 min

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