NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission has identified the process that appears to have played a key role in the transition of the Martian climate from an early, warm and wet environment that might have supported surface life to the cold, arid planet Mars is today. MAVEN data have enabled researchers to determine […]
Aren Gunderson parks his truck, steps out and strips off his sweatshirt. “I always take off my outer clothing layer,” says the caretaker of the University of Alaska Museum’s colony of flesh-eating beetles. “The stink will stay with you.” Gunderson, mammal collection manager at the museum, approaches a weathered set of buildings. He swings open […]
Even fish look forward to retirement. After making an exhausting migration from river to ocean and back to river — often multiple years in a row — one species of Alaskan trout decides to call it quits and retire from migrating once they are big enough to survive off their fat reserves. This is the […]
The Coalsack Nebula is located about 600 light-years away in the constellation of Crux (The Southern Cross). This huge, dusky object forms a conspicuous silhouette against the bright, starry band of the Milky Way and for this reason the nebula has been known to people in the southern hemisphere for as long as our species […]