Authorities intercepted a woman using this drug kit in preparation for shooting up a mix of heroin and fentanyl inside a Walmart bathroom last month in Manchester, N.H. Fentanyl offers a particularly potent high but also can shut down breathing in under a minute. Salwan Georges/Washington Post/Getty Images hide caption
Statisticians say it may not be wise to put all their eggs in the significance basket. intraprese/Getty Images hide caption
Horizon, by Barry Lopez Deckle Edge hide caption
Dr. Hillary Tamar, who's in the second year of her family medicine residency in Phoenix, is part of a new generation of doctors who are committed to treating addiction. Jackie Hai/KJZZ hide caption
A chimpanzee hugs her newborn at Burgers' Zoo in Arnhem, Netherlands, in 2010. Over the course of his long career, primatologist Frans de Waal has become convinced that primates and other animals express emotions similar to human emotions. AFP/Getty Images hide caption
Marcelo Gleiser, 60, won the 2019 Templeton Prize for his work seeking the common ground between science and spirituality. Eli Burakian/Dartmouth College hide caption
The Laser Interferometer Gravitational-Wave Observatory is made up of two detectors, this one in Livingston, La., and one near Hanford, Wash. The detectors use giant arms in the shape of an "L" to measure tiny ripples in the fabric of the universe. Caltech/MIT/LIGO Lab hide caption
For people with a rare condition known as misophonia, certain sounds like slurping, chewing, tapping and clicking can elicit intense feelings of rage or panic. Photo illustration by Meredith Rizzo/NPR hide caption
Marijuana plants grow in a marijuana cultivation facility on July 6, 2017 in Las Vegas, Nevada. Ethan Miller/Getty Images hide caption
Eddie Woo on the TED stage. Vincenzo Amato/TEDxSyd hide caption
Adam Spencer on the TED stage. James Duncan Davidson/TED hide caption
Envy is a useful tool for social comparison. But sometimes, it can lead us to wicked places. Steve Scott/Getty Images/Ikon Images hide caption
A biomechanical model of producing an "f" sound with an overbite (left) compared with an edge-to-edge bite (right). Some linguists are arguing that the advent of softer food thousands of years ago led to changes in biting patterns and, eventually, to more frequent use of sounds like "f" and "v" in human languages. Scott Moisik hide caption
There was an uproar in 2018 when a scientist in China, He Jiankui, announced that he had successfully used CRISPR to edit the genes of twin girls when they were embryos. Prominent scientists hope to stop further attempts at germline editing, at least for now. Mark Schiefelbein/AP hide caption
A satellite image from Wednesday morning shows a powerful storm system heading east across the U.S. The storm is expected to bring high winds, snow and rain to much of the central U.S. in the coming days. GOES-East/NOAA hide caption
Solar panels fill a field in Provence-Alpes-Cote d'Azur, France. Panoramic Images/Getty Images hide caption
An artist's rendering shows a needle-like carbon nanotube delivering DNA through the wall of a plant cell. It also may be possible to use this method to inject a gene editing tool called CRISPR to alter a plant's characteristics for breeding. Courtesy of Markita del Carpio Landry hide caption
Geoffrey Clark of Australian National University holds a bone comb from a tattooing kit found to be approximately 2,700 years old. Jack Fox/Australian National University hide caption
Jonah Reeder prepares a special protein shake that helps him manage a metabolic condition called phenylketonuria. Julia Ritchey/KUER hide caption
