Julio Francisco waits for people to show up wanting a COVID-19 test on January 13, 2022 in Miami, Florida. Joe Raedle/Getty Images hide caption
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A health worker wearing protective clothing shows people lining up at a testing center in Beijing, China. Kevin Frayer/Getty Images hide caption
A computer-generated image of the omicron variant of the coronavirus. Uma Shankar Sharma/Getty Images hide caption
A glass is filled in with water on April 27, 2014 in Paris. Scientists studying what makes us thirsty have found the body checks in on our water consumption in several different ways. FRANCK FIFE/AFP via Getty Images hide caption
Thirsty? Here's how your brain answers that question
Dr. Chikwe Ihekweazu is the head of the World Health Organization's newly created Hub for Pandemic and Epidemic Intelligence. "We have to get better at convincing leaders to use the data we provide and not their political instinct or whatever else their decisions are based on. And that's not easy," he says. Afolabi Sotunde/Reuters hide caption
Two chimpanzees roam the grounds of Chimp Haven in Louisiana. Many former research chimpanzees have been sent to retire at the sanctuary. Images provided by Chimp Haven hide caption
The NIH is 'largely finished' moving its former research chimps to a sanctuary
Gas stoves emit pollution into your house and are connected to a production and supply system that leaks the powerful greenhouse gas methane during drilling, fracking, processing and transport. Meredith Miotke for NPR hide caption
The radio telescope in Parkes, Australia is used by SETI researchers to search for potentially alien radio transmissions. TORSTEN BLACKWOOD/AFP via Getty Images hide caption
This family photo shows D.J. Ferguson initially being treated at Milford, Mass., Regional Medical Center. Brigham and Women's Hospital in Boston is defending itself after Ferguson's family claimed he was denied a new heart for refusing to be vaccinated against COVID-19. Tracey Ferguson file photo/via AP hide caption
A monoclonal treatment site in Miami is closed on Tuesday after the Food and Drug Administration curbed use of some treatments. Joe Raedle/Getty Images hide caption
Volcanic ash covers rooftops and vegetation in an area of Tonga last week. Thick ash on an airport runway was delaying aid deliveries to the Pacific island nation, where significant damage was reported. CPL Vanessa Parker/New Zealand Defense Force/via AP hide caption
Masked White Plains, N.Y., High School students walk between classes last year. A day after a judge overturned New York's mask mandate, an appellate judge temporarily restored it as the state prepares an appeal. Mark Lennihan/AP file photo hide caption
A man enters the water next to a sign warning on the danger of shark attacks at the L'Etang-Salé beach, on the Indian Ocean island of La Réunion in 2019. Richard Bouhet/AFP via Getty Images hide caption
A person visits a Covid-19 testing site along a Manhattan street in New York City. Spencer Platt/Getty Images hide caption
Red Cross teams set up a temporary shelter in Kanokupolu, western Tongatapu, on Friday as the Tonga island group grapples with the aftermath from the recent underwater volcanic eruption. Tonga Red Cross Society/via AP hide caption
The James Webb Space Telescope will capture pictures of the very first stars in the universe and help scientists study the atmosphere of planets orbiting stars outside our solar system to see if they might be habitable. NASA/AP hide caption
Bark beetle larvae grip the ground with their claws in order to build up energy to accomplish their acrobatics. Adrian Smith/Matt Shipman hide caption
Simone Biles has a rival — a tiny bark beetle (but it can't stick the landing)
Céline Vidal uncovering the ash layer above Omo 1 remains at Omo-Kibish. Christine Lane hide caption
A prehistoric eruption has helped recalibrate our timeline of human origins in Africa
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
This German snowman wears a protective mask over its banana nose and mouth, but experts say the risk of catching COVID outdoors is slim. Peter Kneffel hide caption
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
People wearing face masks to help protect against the spread of the coronavirus walk on a street lined with bars and restaurants in Tokyo on Jan. 19, 2022. Koji Sasahara/AP File Photo hide caption
Fighting Bias In Space: When There's A New Telescope, Who Gets To Use It?
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