Christy Ullrich Barcus

From powerful roars to low-frequency rumbles, elephants use a variety of vocalizations to communicate. Their sounds also include snorts, barks, grunts, trumpets, cries, and even imitated sounds. These calls are essential cues for the survival of an elephant family. Elephant biologist and National Geographic Explorer Joyce Poole, along with ElephantVoices co-director Petter Granli, have recorded thousands of elephant...

Jim Nyamu, a 37-year-old Kenyan research scientist, finished his 560-mile walk in Washington, D.C., last week to raise awareness about threats to elephants in the wild. He spoke to a gathering of about a hundred people in Lafayette Park opposite the White House. His finish was timed to coincide with the International March for Elephants,...

Jim Nyamu, a 37-year-old Kenyan research scientist, finished his 560-mile walk in Washington, D.C., last week to raise awareness about threats to elephants in the wild. He spoke to a gathering of about a hundred people in Lafayette Park opposite the White House. His finish was timed to coincide with the International March for Elephants,...

By Christy Ullrich National Geographic Elephants are some of nature’s most majestic creatures. But how do scientists know who’s who in the wild? To think like an elephant scientist, it’s important to look at key characteristics, said elephant biologist and National Geographic Explorer Joyce Poole. These traits include sex, body size and shape, tusk configuration,...

By Christy Ullrich National Geographic Elephants are some of nature’s most majestic creatures. But how do scientists know who’s who in the wild? To think like an elephant scientist, it’s important to look at key characteristics, said elephant biologist and National Geographic Explorer Joyce Poole. These traits include sex, body size and shape, tusk configuration,...

By Christy Ullrich National Geographic Elephants are some of nature’s most majestic creatures. But how do scientists know who’s who in the wild? To think like an elephant scientist, it’s important to look at key characteristics, said elephant biologist and National Geographic Explorer Joyce Poole. These traits include sex, body size and shape, tusk configuration,...

By Susan McGrath for National Geographic Polar Bear Watch   In Barrow, on the northern coast of Alaska, the sun sets at five o’clock on October 31, and the temperature typically drops into the single digits. This doesn’t faze the town’s schoolchildren. They dress up and go trick-or-treating door to door just as American kids...

By Susan McGrath for National Geographic Polar Bear Watch   In Barrow, on the northern coast of Alaska, the sun sets at five o’clock on October 31, and the temperature typically drops into the single digits. This doesn’t faze the town’s schoolchildren. They dress up and go trick-or-treating door to door just as American kids...

By Emily Shenk National Geographic A skier crosses the Arctic Ocean, where the extent of summer sea ice has declined by about 30 percent during the last three decades. Photo by Dan Westergren A study published in the International Journal of Climatology in May adds to the growing research linking melting sea ice in the Arctic...

By Emily Shenk National Geographic A skier crosses the Arctic Ocean, where the extent of summer sea ice has declined by about 30 percent during the last three decades. Photo by Dan Westergren A study published in the International Journal of Climatology in May adds to the growing research linking melting sea ice in the Arctic...

By Emily Shenk National Geographic A skier crosses the Arctic Ocean, where the extent of summer sea ice has declined by about 30 percent during the last three decades. Photo by Dan Westergren A study published in the International Journal of Climatology in May adds to the growing research linking melting sea ice in the Arctic...

Icon of the Arctic, the polar bear thrives in the remote Arctic landscape of ice and snow. World-renowned polar bear scientist Ian Stirling offers his thoughts on the state of polar bears in the wild, the threats they face today, and insights from his recent book, Polar Bears: A Natural History of a Threatened Species...