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Rosie Brennan of the United States competes in a Tour de Ski, women's 10-kilometer freestyle, interval start cross-country ski event, in Dobbiaco (Toblach), Italy, on Jan. 5, 2021. She is planning to compete at the Beijing Winter Olympics next month. Alessandro Trovati/AP hide caption

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Alessandro Trovati/AP

Could the world become too warm to hold Winter Olympics?

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The Tonga volcano on December 24 2021 as seen from a satellite. The eruption turned explosive, in what nuclear monitors say was the biggest bang they've ever recorded. Maxar hide caption

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Maxar
JIM WATSON/AFP via Getty Images

MRSA (methicillin-resistant Staphylococcus aureus), depicted above in yellow and surrounded by cellular debris, is a staph bacterium that resists treatment by many common antibiotics. The image is from a scanning electron micrograph. NIH/NAID/IMAGE.FR/BSIP/Universal Images Group via Getty Images hide caption

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NIH/NAID/IMAGE.FR/BSIP/Universal Images Group via Getty Images

This stock image shows a baby and father playing at home. New research finds that babies judge the relationship between two people by whether or not they willingly share saliva. freemixer/Getty Images hide caption

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freemixer/Getty Images

Even babies and toddlers know that swapping saliva is a sure sign of love

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"By bringing archaeological perspectives to an active space domain, we're the first to show how people adapt their behavior to a completely new environment," Associate Professor Justin Walsh of Chapman University said of the experiment. NASA hide caption

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NASA

People wait in line to test for COVID-19 on Wednesday, Jan. 12, 2022, in Long Beach, Calif. Ashley Landis/AP hide caption

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Ashley Landis/AP

The Hodgepodge Of COVID Testing In The U.S.

The U.S. government has launched a website where people can request up to four free coronavirus tests per household--shipping is scheduled to begin in late January. They're responding to the fact that many Americans are really struggling to find tests as omicron surges across the country. (https://special.usps.com/testkits) Today on the show, our colleagues at Planet Money try to get tested — and they run into problems. From scammy testing sites to no tests at all, they explain what's behind the nation's COVID testing mess.

The Hodgepodge Of COVID Testing In The U.S.

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Associated Press

A resident receives a dose of the Pfizer COVID-19 vaccine at a health center in Jakarta, Indonesia, on Jan. 13. This week, Indonesia started a program to give booster shots to the elderly and people at risk of severe disease. Dimas Ardian/Bloomberg via Getty Images hide caption

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Dimas Ardian/Bloomberg via Getty Images

Booster longevity: Data reveals how long a third shot protects

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It took about a decade to get the Ku'ia Solar plant in Lahaina, Maui up and running. Hawaii's utility commissioners hope that new "performance-based regulation" will better incentivize the monopoly utility to get solar plants like this onto the grid more quickly. Julia Simon for NPR hide caption

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Julia Simon for NPR

The island of Hunga Tonga-Hunga Ha'apai as imaged by the satellite company Maxar on Jan. 6 (left) and Jan. 18 (right). It was obliterated in a volcanic eruption that scientists estimate was 10 megatons in size. Satellite image ©2022 Maxar Technologies hide caption

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Satellite image ©2022 Maxar Technologies

NASA scientists estimate Tonga blast at 10 megatons

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In their research, Andrea Ford and Giulia De Togni found that period tracking app users valued the control over their personal health the apps enabled. Most users they spoke with see the commodification of their personal data as a tradeoff they're forced to make. Ana Maria Serrano/Getty Images hide caption

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Ana Maria Serrano/Getty Images

An employee of Sotheby's Dubai presents a 555.55 Carat Black Diamond called "The Enigma" on Monday that will be auctioned at Sotheby's Dubai gallery, in Dubai, United Arab Emirates. Kamran Jebreili/AP hide caption

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Kamran Jebreili/AP

A bald eagle takes flight from a sandbar with its meal in its talons off of Brunswick, Maine, along the New Meadows River, on Aug. 22, 2011. Pat Wellenbach/AP hide caption

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Pat Wellenbach/AP

This colorized transmission electron micrograph image shows SARS-CoV-2, the coronavirus that causes the disease COVID-19. This specimen was isolated from a patient in the United States. Particles of the virus (yellow) are emerging from the surface of cells cultured in the lab (pink). Science Source hide caption

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Science Source

Picture of a sign warning about the presence of hippos in a neighborhood in Colombia, near the Hacienda Napoles theme park, once the private zoo of drug kingpin Pablo Escobar. RAUL ARBOLEDA/AFP via Getty Images hide caption

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RAUL ARBOLEDA/AFP via Getty Images