Middle Palaeolithic artifacts recently excavated from Attirampakkam, an archaeological site in present-day southern India. The artifacts suggest the technique used to make them spread across the world long before researchers previously thought. Sharma Centre for Heritage Education, India/Nature hide caption
Peruvian authorities are pursuing charges against a truck driver who damaged the ancient lines at Nazca on Saturday. Here, an aerial view of the geoglyph known as the Guarango Tree at the site in 2014. Martin Bernetti/AFP/Getty Images hide caption
A unit of the 1st Battalion, 5th Marine Regiment, rests alongside a battered wall of Hue's imperial palace after a battle for the citadel in February 1968, during the Tet Offensive. AP hide caption
A trio of illustrations from the cocktail book Shakespeare, Not Stirred: Ophelia, King Henry VIII and King Lear. The Folger Shakespeare Library / James Monaco hide caption
A recently renovated Mariachi Plaza is pictured in Boyle Heights, Calif., is a Hispanic and low-income neighborhood of Los Angeles that's fighting hard to prevent gentrification, the threat of escalating rents and "washed out" identity. Mark Ralston/AFP/Getty Images hide caption
Chef Heidi Rae Weinstein holds a Reuben sandwich, complete with Swiss cheese — definitely a kosher no-no — at Trefa Banquet 2.0, an event held in San Francisco to commemorate a scandalous meal held in 1883 by newly ordained rabbis of the Jewish reform movement. The event has practically become myth. Lydia Daniller hide caption
Despite the disbanding of communes and the persistence of capitalism, culinary contributions from hippies have not only endured, but helped set the framework for the way we eat today. Evening Standard/Getty Images hide caption
As mother and daughter, Carmen and Gisele Grayson thought their DNA ancestry tests would be very similar. Boy were they surprised. Meredith Rizzo/NPR hide caption
Queen Elizabeth II dances with Ghanaian president Kwame Nkrumah at a ball in Accra, Ghana, in 1961. Central Press/Getty Images hide caption
Helen Grace James holds images from her time in the Air Force. "The military was something I thought was really important," she told The Washington Post. Legal Aid at Work hide caption
Formed in 1965, Jane was an underground network in Chicago that counseled and helped women who wanted to have abortions. (From left) Martha Scott, Jeanne Galatzer-Levy, Abby Parisers, Sheila Smith and Madeline Schwenk were among the seven members of Jane arrested in 1972. Courtesy of Martha Scott hide caption
Dr. Mathilde Krim at the World AIDS Day Symposium presented by the Foundation For AIDS Research and the Columbia University Mailman School of Public Health in 2002. Krim had a knack for helping people talk about HIV/AIDS rationally, colleagues say. Theo Wargo/WireImage hide caption
"Racial impostor syndrome" is definitely a thing for many people. We hear from biracial and multi-ethnic listeners who connect with feeling "fake" or inauthentic in some part of their racial or ethnic heritage. Kristen Uroda for NPR hide caption
Hundreds of people demonstrate against racism in the Brooklyn neighborhood of Bay Ridge on Martin Luther King Jr. Day on Jan. 15, 2018 in New York City. Spencer Platt/Getty Images hide caption