NASA astronauts (from left) Bob Behnken, Doug Hurley and Chris Cassidy are the U.S. members of the Expedition 63 crew aboard the International Space Station. Behnken and Hurley are scheduled to return to Earth on Aug. 2. NASA hide caption
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Friday
Andrew Stuart wears a bandana as a mask while taking a selfie with his dog, Voltron, on Sunset Blvd, Thursday, July 2, 2020, in West Hollywood, Calif. Ashley Landis/AP hide caption
Coronavirus Questions Answered, Plus A Chat About 'Indian Matchmaking'
Director of the National Institutes of Health, Dr. Francis Collins, holds a model of the coronavirus. This is the sixth vaccine candidate to join Operation Warp Speed's portfolio, and the largest vaccine deal to date. Saul Loeb/Pool/AFP via Getty Images hide caption
A man runs with his dog while at Brooklyn Bridge Park. If you're greeting other doggos, do it from a distance. Al Bello/Getty Images hide caption
Coronavirus Q&A: Running Outside, Petting Dogs, And More
Thursday
A healthcare worker zips up a protective barrier in the Covid-19 Unit at United Memorial Medical Center in Houston on July 2. Mark Felix/AFP via Getty Images hide caption
The U.S. Has Lost Control Of The Coronavirus. What Now?
A scientist is pictured working during a visit by Britain's Prince William, Duke of Cambridge (unseen), to Oxford Vaccine Group's laboratory facility at the Churchill Hospital in Oxford, west of London on June 24, 2020, on his visit to learn more about the group's work to establish a viable vaccine against coronavirus COVID-19. STEVE PARSONS/POOL/AFP via Getty Images hide caption
Air pollution is a persistent problem in California's Central Valley. A new study finds that the places that were most polluted nearly 40 years ago generally remain the most polluted today. David McNew/Getty Images hide caption
On the left is an unmodified hatchling of a longfin inshore squid (Doryteuthis pealeii). The one on the right was injected with CRISPR-Cas9 targeting a pigmentation gene before the first cell division. It has very few pigmented cells and lighter eyes. Karen Crawford hide caption
Lillian Kay Petersen, 17, from Los Alamos, N.M., won first place in the 2020 Regeneron Science Talent Search, a science and math competition for high school seniors. The pandemic meant a virtual Zoom ceremony rather than what's usually a black-tie gala ceremony in the nation's capital. Society for Science screenshot hide caption
High School Senior's Tool To End Food Insecurity Wins National Competition
Monarch butterflies, like this one in Temascaltepec, Mexico, use ultraviolet polarized light to help them navigate in flight. Omar Torres/AFP via Getty Images hide caption
Butterflies Have Hearts In Their Wings. You'll Never Guess Where They Have Eyes
Wednesday
Sheep graze in front of southern England's Stonehenge in April. Scientists say they've determined some of the structure's sandstone megaliths came from 15 miles away. Adrian Dennis/AFP via Getty Images hide caption
Amazon CEO Jeff Bezos, Facebook CEO Mark Zuckerberg, Google CEO Sundar Pichai, and Apple CEO Tim Cook are sworn-in before the House Judiciary Subcommittee on Antitrust, Commercial and Administrative Law. MANDEL NGAN/POOL/AFP via Getty Images hide caption
In The Pandemic, Big Tech Is Bigger Than Ever. Should Consumers Be Worried?
Blood plasma — the yellowish, cell-free portion that remains after red and white blood cells have been filtered out by a machine and returned to the plasma donor — is rich with antibodies. Plasma from recovered COVID-19 patients might prove useful in preventing infection as well as in treatment, scientists say. Lindsey Wasson/Reuters hide caption
Harvested Antibodies Now Being Tested As A Prevention Tool Against COVID-19
A United Arab Emirates spacecraft rockets away on a seven-month journey to Mars. MHI via AP hide caption
Tuesday
"People are not very good with large numbers," says Elke Weber, a professor of psychology at Princeton University. "We don't discriminate between 150,000 or 300,000 or 3 million." Malte Mueller/Getty Images/fStop hide caption