Researchers have observed that the friendliest male bonobos, like this male resident of Lola Ya Bonobo sanctuary in the Democratic Republic of the Congo, tend to be the most successful. Early humans may have had the same experience with their peers. Ley Uwera for NPR hide caption
Tony Potts, a 69-year-old retiree living in Ormond Beach, Fla., receives his first injection earlier this year as a participant in a Phase 3 clinical trial of Moderna's COVID-19 candidate vaccine. NurPhoto via Getty Images hide caption
A partially eclipsed super blue blood moon sets behind the Golden Gate Bridge on Jan. 31, 2018, in San Francisco. The "super blue blood moon" is a rare "lunar trifecta" event and was the first such lunar event seen in North America since 1866. Justin Sullivan/Getty Images hide caption
Learning to ride a bike can lead to memorable tumbles. It's the brain's "time cells," scientists now say, that help organize and seal those experiences in our minds. Peter Cade/Getty Images hide caption
A harvester works through a field of corn near Santa Rosa, Calif. This corn has been genetically modified, and contains bacterial genes that kill certain insects, but the genes have become less effective. Rich Pedroncelli/AP hide caption
During deep sleep, waves of cerebrospinal fluid (blue) coincide with temporary decreases in blood flow (red). Less blood in the brain means more room for the fluid to carry away toxins, including those associated with Alzheimer's disease. Fultz et al. 2019 hide caption
Increasingly, many people in the U.S., like these teens in a Miami grocery story in August, now routinely wear face masks in public to help stop COVID-19's spread. But social distancing and other public health measures have been slower to catch on, especially among young adults, a national survey finds. Jeff Greenberg/Universal Images Group via Getty Images hide caption
Kindred: Neanderthal Life, Love, Death and Art, Rebecca Wragg Sykes Bloomsbury Sigma hide caption
A box of Twinkies sat in Colin Purrington's basement for eight years, until just a few weeks ago. Two West Virginia University scientists are studying the fungi growing on them. Matt Kasson hide caption
Cars line up Friday at a coronavirus testing site at the University of Texas at El Paso. The area has seen a surge in cases in recent weeks, and a two-week curfew is now in effect in El Paso County. Paul Ratje/AFP via Getty Images hide caption
On average, each U.S. nursing home is connected to seven others through shared staff, a study by Yale and UCLA researchers suggests. Rigorous infection control measures can curb the spread of the coronavirus, but many workers say they still don't have sufficient masks and other personal protective equipment. SDI Productions/Getty Images hide caption
Researchers have detected water molecules in Clavius crater, in the moon's southern hemisphere. The large crater is visible from Earth. NASA/Screenshot by NPR hide caption