A nurse fills a syringe with a COVID-19 vaccine in the Staten Island borough of New York on April 8, 2021. The Food and Drug Administration on Thursday recommended that COVID booster shots be modified to better match more recent variants of the coronavirus. Mary Altaffer/AP hide caption
A woodcut from the 15th century depicts a scene from the Black Death plague, which killed an estimated 50 million people in Europe and the Mediterranean between 1346 and 1353. Scientists say they may have found the origin of this deadly disease. Pictures from History/Universal Images Group/Getty Images hide caption
This mosquito spreads dengue, Zika and yellow fever too. Could these diseases make a human emit an odor that draws the insect in to take a bite? Joao Paulo Burini/Getty Images hide caption
A sign marks the facade of the Robert F. Kennedy Department of Justice Building in Washington, D.C. on May 5. A group of senators are asking the DOJ why the agency has failed to file reports on the federal government's compliance with website accessibility standards. Patrick Semansky/AP hide caption
Kathaleen Pittman, administrator at Hope Medical Group in Shreveport, watches local TV news discussing a temporary restraining order the clinic won on Monday against Louisiana's abortion bans. Sarah McCammon/NPR hide caption
The science isn't entirely settled on whether a rapid antigen test indicates whether a person is still contagious. Massimiliano Finzi/Getty Images hide caption
The Federalist Society's Leonard Leo speaks to media at Trump Tower in 2016. Carolyn Kaster/AP hide caption
Product shots of the upcoming feature Anonymous mode on the period tracker app Flo. Flo hide caption
Saint Luke's Hospital in Kansas City, Mo., stopped providing emergency contraceptives due to the state's abortion ban, then reversed course. Carlos Moreno/KCUR hide caption
Cracking a window can help reduce your risk of infection by COVID pathogens. Tanishka R./For NPR hide caption
Actor Iman Vellani, who plays Kamala Khan in the new Disney+ TV show Ms. Marvel, attends a screening in London on May 26. Tristan Fewings/Getty Images hide caption
TK Scott Barbour/Getty Images hide caption
An abortion-rights activist holds up a flare outside the Constitutional Court in Bogotá, Colombia, in February. The court later ruled that people can get abortions until the 24th week of pregnancy without any permits from lawyers or doctors. Fernando Vergara/AP hide caption
Working Dogs for Conservation trainer Michele Vasquez clips a vest onto Charlie, a Labrador retriever, to let him know he's working. Dogs like Charlie will help sniff out chronic wasting disease in deer and elk scat. They will also help find mink and otter droppings that can be tested for toxic substances near illegal dumpsites. Aaron Bolton/Kaiser Health News hide caption
This 2003 electron microscope image made available by the Centers for Disease Control and Prevention shows mature, oval-shaped monkeypox virions, left, and spherical immature virions, right, obtained from a sample of human skin associated with the 2003 prairie dog outbreak. Cynthia S. Goldsmith, Russell Regner/CDC via AP hide caption