What Causes the Aurora Borealis? By Larry Gedney and Vladimir Degen During the early 19th century, some of the best scientific minds of the period believed that the aurora was caused by the reflection of sunlight from tiny ice crystals suspended high in the atmosphere. It remained for the Norwegian physicist Anders Angstrom (1814-1874) to [...]
Salmon nose deep into Alaska ecosystems By Ned Rozell [fusion_dropcap]D[/fusion_dropcap]uring a good year in Bristol Bay, a surge of more than 100 million pounds of sockeye salmon fights its way upstream, spawns, and dies. In Bristol Bay and elsewhere in Alaska, this incredible pulse of salmon carcasses enriches streams and rivers and makes young fish [...]
Alaska Blackfish In A World Of Its Own By Ned Rozell [fusion_dropcap]I[/fusion_dropcap]magine a shallow lake north of Hughes, in the cold heart of Alaska. In frigid, sluggish water, dim blue light penetrates two feet of ice. The ice has a quarter-size hole, maintained by a stream of methane bubbles. Every few minutes, a brutish little [...]
Cities like Seattle are joining with others around the world and taking on goals for green development, while states like Colorado are passing bond initiatives for transit and new requirements for clean energy.
Mastodons long gone from the north By Ned Rozell [fusion_dropcap]A[/fusion_dropcap] long, long time ago, a hairy elephant stomped the northland, wrecking trees and shrubs as it swallowed twigs, leaves and bark. These mastodons left a few scattered teeth and bones in Alaska and the Yukon, reminders of an immense mammal that lived as far south [...]
