Dr. Nico Dosenbach decided to put his healthy arm in a cast to figure out more about how the brain deals with an immobilized limb. Tim Parker/Washington University School of Medicine hide caption
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Marine biologist Ayana Elizabeth Johnson speaks on stage during the 2019 NYC Climate Strike rally and demonstration at Battery Park. Ron Adar/SOPA Images/LightRocket via Getty Images hide caption
An artist's interpretation of a baby mosasaur hatching from an egg in the Antarctic sea. Francisco Hueichaleo hide caption
Scientists Find The Biggest Soft-Shelled Egg Ever, Nicknamed 'The Thing'
Cows with genes from the human immune system make antibodies that may help people fight the coronavirus. Walter Portz/SAB Biotherapeutics hide caption
World Health Organization Technical Lead Maria Van Kerkhove speaks during a daily press briefing on the coronavirus at the WHO headquarters in Geneva. Fabrice Coffrini/AFP via Getty Images hide caption
How Many People Transmit The Coronavirus Without Ever Feeling Sick?
A COVID-19 patient is attached to a ventilator in April in the emergency room at St. Joseph's Medical Center in Yonkers, N.Y. A steroid treatment is showing promise in reducing mortality for patients on ventilators. John Minchillo/AP hide caption
Health workers and others rallied in Seattle during a Doctors For Justice event on June 6, protesting police brutality in the wake of George Floyd's death. Medical training needs a hard look too, doctors say: Students of color and LGBTQ people often bear the brunt of what can be a bullying culture. David Ryder/Getty Images hide caption
Nancy Beck testifies in front of the Senate in 2017 when she was a senior policy director at the American Chemistry Council trade group. President Trump nominated Beck to head the Consumer Product Safety Commission. U.S. Senate/Screenshot by NPR hide caption
Olutosin Oduwole at his home in New Jersey in 2016. Shankar Vedantam /NPR hide caption
Rap on Trial: How An Aspiring Musician's Words Led To Prison Time
A bottle of hydroxychloroquine tablets in Texas City, Texas. The Food and Drug Administration has rescinded its emergency use authorization for the drug. David J. Phillip/AP hide caption
Drivers line up for COVID-19 testing in the Sherman Oaks neighborhood of Los Angeles in May. Kevin Winter/Getty Images hide caption
What Zebra Mussels Can Tell Us About Errors In Coronavirus Tests
A federal court has ordered farmers to stop spraying one of the country's most widely used herbicides, dicamba. Nicholas Kamm, AFP Contributor/AFP via Getty Images hide caption
A swarm of desert locusts flies above trees in a Kenyan village. Hundreds of millions of the insects have arrived in Kenya, where they're destroying farmland. Ben Curtis/AP hide caption
Hurricane Irma sends a storm surge crashing over a seawall at the mouth of the Miami River in Florida. The Army Corps of Engineers is proposing a network of more sea walls, gates and other barriers to protect the Miami waterfront from storms and hurricanes. Wilfredo Lee/AP hide caption
In the lab with George Washington Carver, a prominent soil scientist and inventor of the early 20th Century Bettmann/Bettmann Archive hide caption
Many long-haulers feel isolated and face disbelief from doctors and loved ones. Bobby Jon Calderon/Getty Images hide caption
"Social distancing ambassadors" (in pink) stand at the entrance to Miami Beach, Florida, on June 10. The beaches of Miami opened today for the first time after nearly three months of closure due to the novel coronavirus pandemic, with staff present to remind visitors of the rules of social distancing. Chandan Khanna/AFP via Getty Images hide caption
Sea otters are tourist magnets--and voracious eaters. Not everyone is happy about their comeback off the coast of British Columbia. Ted S. Warren/AP hide caption
A researcher at the German Center for Immunity Therapy holds a bag containing blood plasma from a recovered COVID-19 patient at the University Hospital Erlangen on April 27, 2020 in Erlangen, Germany. This plasma could be used to treat people with COVID-19. Alexander Hassenstein/Getty Images hide caption
Five Coronavirus Treatments In Development
A protestor raises her hands near a line of National Guard soldiers deployed near the White House on June 1 during demonstrations against George Floyd's death. Roberto Schmidt/AFP via Getty Images hide caption
Numbers Steady, Hundreds More Dead Each Day; The Cost Of Opening Schools
A vendor waters fresh greens for sale at a stall in a market in Abuja, Nigeria. KC Nwakalor/Bloomberg via Getty Images hide caption