Benjamin Russell pointed out different years of growth on a white spruce tree, using bud scars found on the back of the branch to segment off different growing seasons’ needles. “This is the new growth, the growth from this season. And see how abnormally large this is compared to the rest of the tree? That […]
Arctic ground squirrels may seem like little more than a brief thrill for your dog on a hike up Flat Top, but scientists are convinced they’re worth a serious second look.
Laura Nielsen for Frontier Scientists Balloons are far from the first things that come to mind when you hear scientific discovery, but measurements taken by a fleet of eight-story-tall balloons released earlier this year are helping scientists make new discoveries about our planet. The 20 balloons lofted into the pristine cold air above Antarctica this […]
Laura Nielsen for Frontier Scientists Researchers have combed through the last 2,000 years of climate records. Their assessment affirms that a persistent long-term cooling trend concluded in the late 19th century, reversed by global warming. The study was performed by members of the “2K Network” of the International Geosphere Biosphere Program (IGBP) Past Global Changes […]
February 28, 2012– Bureau of Land Management archaeologist Bill Hedman cries out in amazement as he uncovers a prehistoric tool from a small hole he has dug in a treeless expanse of tundra. As the lone BLM archaeologist for 12 million acres of public land in northwestern Alaska, Hedman covers a gigantic area, nearly all […]