This mako shark looks like its ancient ancestors, but it's probably evolved to be even more terrifying. Sam Cahir/Barcroft Media/Landov hide caption

In the restored San Gennaro catacombs, mosaics like this are lit with high-tech lighting paid for by grants from big corporations. Courtesy of the San Gennaro Catacombs hide caption

Pakistani motorists wait in line at a refueling station in the outskirts of Islamabad on Jan. 20, 2013. Waits of up to four hours have become a way of life since Pakistan decided to switch to compressed natural gas about a decade ago. Farooq Naeem/AFP/Getty Images hide caption

Kinder Than Solitude is Yiyun Li's sixth book. Roger Turesson/Courtesy of Random House hide caption

Andrew Winter's Gulls at Monhegan was lost after it was given — wrongly — to an American ambassador to Costa Rica when he retired. Courtesy of the U.S. GSA Fine Arts Program hide caption

SAT preparation books on a bookstore shelf in New York City. The College Board has announced changes in the college entrance exam. Mario Tama/Getty Images hide caption

Diego Sanchez, the first openly transgender person to work as a legislative staffer on Capitol Hill, helped to develop a new Justice Department program that trains law enforcement to be more sensitive to the needs of transgender people. J. Scott Applewhite/AP hide caption

Unlike many young women in her ultra-Orthodox Jewish community, Yael Mizrachi drives and has two university degrees. She's also having a difficult time finding a spouse. Emily Harris/NPR hide caption