People who study animal behavior think they may have found out why wolves hunt in packs — because ravens are such good scavengers. Scientists who watched wolves on Isle Royale in Lake Superior came up with the raven-wolf pack theory after puzzling over a question: Why do wolves hunt in large groups when a single […]
With dogs’ breath fogging the 30-below zero air at their knees, 71 Iditarod mushers steamed their way down the frozen Chena River in Fairbanks on March 6. Upstream, just a few miles behind them, 500 ducks were surviving in a one-mile stretch of open water. You might think the mallards that did not migrate […]
In early March up on the frozen Arctic Coastal Plain, as the wind sculpts snow into drifts, it’s hard to tell northern lakes from surrounding tundra. But lurking deep beneath that flat white world are toothy predators as long as your arm. In pools 60 feet down, lake trout are somehow passing the long winter. […]
As another major rainstorm hit California in February, downtown San Francisco surpassed its normal rain total for an entire year. Reservoirs in the high country were spilling over. So ended a five-year drought in the state that some people attributed to human-caused climate change. Those pictures of dried-up California lakes bothered Syun-Ichi Akasofu, who recently […]