High-speed tracking dogs have been a game-changer in the fight against rhino poaching in South Africa. Their success depends on their ability to work as a team, which means they sleep and eat in the pack-sized enclosures shown above. David Fuchs hide caption
Tinder for wolves? The survival of the Maned wolf may depend on the science of matchmaking. NPR hide caption
A southern white rhino named Victoria is two months pregnant. Barbara Durrant, director of reproductive sciences at the San Diego Zoo Institute for Conservation Research, announced the news on Thursday. Julie Watson/AP hide caption
A gray wolf in Jamtland County, Sweden. A wealthy landowner in Scotland is hoping to bring wolves from Sweden to the Scottish Highlands to thin the herd of red deer. Gunter Lenz/imageBROKER RF/Getty Images hide caption
Pro-public lands messages are projected on the McNichols Civic Center in Denver. The Outdoor Retailer and Snow Show moved to Colorado because of a public land use dispute with Utah government leaders. Grace Hood/Colorado Public Radio hide caption
Three king penguins approach the only church on South Georgia Island. Comedy Wildlife Photography Awards/Carl Henry / CWPA / Barcroft Images hide caption
Rodney Stotts walks across the roof of the Matthew Henson Earth Conservation Center with one of his hawks. A former drug dealer, he is now a falconer — one of only 30 African-American falconers in the U.S., he says. Claire Harbage/NPR hide caption
Google wants to pump 1.5 million gallons of water per day to cool servers at its data center in Berkeley County, S.C. "It's great to have Google in this region," conservationist Emily Cedzo said. "So by no means are we going after Google ... Our concern, primarily, is the source of that water." Bruce Smith/AP hide caption
Sudan, the last known male of the northern white rhinoceros subspecies, stands for his close-up in a paddock last year at the Ol Pejeta Conservancy in Kenya. If Tinder users swipe right on Sudan's profile, they're taken to a page asking for contributions to help him reproduce. Tony Karumba/AFP/Getty Images hide caption
Steve Reed uses OhmConnect, a service that pays customers to lower their energy use at home during periods of high demand. Megan Wood/inewsource hide caption
Washu chocolate is made from cacao arriba, a sought-after variety of cacao harvested in Ecuador. Ryan Eskalis/NPR hide caption
A group of mule deer in Colorado in 2008. Nathan Bilow/AP hide caption
The cracked-dry bed of the Almaden Reservoir in San Jose, Calif., in 2014. Marcio Jose Sanchez/AP hide caption
A diver swims in a kelp forest in California's Channel Island National Park, where several of the state's marine protected areas are located. National Park Service hide caption