New Yorkers can take city-run classes to learn how to make their homes and businesses less attractive to these guys. Ludovic Bertron/Flickr hide caption

itoggle caption Ludovic Bertron/Flickr

A team of body collectors carry the corpse of a woman suspected of dying of Ebola in Monrovia, Liberia's capital. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR

President Obama said at a White House news conference Thursday that Russia is to blame for the violence in eastern Ukraine. Larry Downing /Reuters /Landov hide caption

itoggle caption Larry Downing /Reuters /Landov

NFL Commissioner Roger Goodell, shown here in January, has sent an open letter to NFL team owners explaining the league's new policies for preventing and punishing domestic violence and sexual assault. Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

Police arrest a woman in Ferguson, Mo., protesting the shooting death of Michael Brown. Most officers in Ferguson and nearby Jennings are white, but the neighborhoods they police are predominantly African-American. Scott Olson/Getty Images hide caption

itoggle caption Scott Olson/Getty Images

The Hilltop Women's Reproductive Clinic in El Paso, Texas, is expected to close if a state law is upheld by a federal judge. Juan Carlos Llorca/AP hide caption

itoggle caption Juan Carlos Llorca/AP

A man closes off an entrance to the Last Stop shooting range in White Hills, Ariz., on Wednesday. Instructor Charles Vacca was killed at the range Monday by a 9-year-old girl he was teaching to use an Uzi submachine gun. John Locher/AP hide caption

itoggle caption John Locher/AP

Big brown bats like this one are relatively common in urban areas, sometimes roosting in buildings. Contrary to popular belief, bats rarely carry rabies and are not rodents. They belong to the order Chiroptera, which means "hand-wing." Courtesy of Robert Marquis hide caption

itoggle caption Courtesy of Robert Marquis

A technician tests samples from Ebola-infected patients at a field lab, run by Doctors Without Borders, in Kailahun, Sierra Leone. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR

The granulated surface of the lake bed known as the Racetrack is a favorite destination for tourists — and for scientists who want to investigate trails left by the meandering stones. Momatiuk - Eastcott/Corbis hide caption

itoggle caption Momatiuk - Eastcott/Corbis

James Tomsheck poses in his office in Washington in June 2009. At the time, he was assistant commissioner for internal affairs with U.S. Customs and Border Protection. Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP