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Results 141 - 143 of 143.


Earth Sciences - Environment - 07.01.2013
Mountains Are Only Minor Contributors to Sediment Erosion and Climate Regulation
Mountains Are Only Minor Contributors to Sediment Erosion and Climate Regulation
Though churning smokestacks, cud-chewing cows and gasoline-burning vehicles are contributing constantly to greenhouse gas emissions, there are also many processes that do the reverse, pulling molecules like carbon dioxide out of the atmosphere. One of these is chemical weathering, which occurs when rock turns into soil.

Earth Sciences - Life Sciences - 04.01.2013
Dinosaur shook tail feathers for mating show
Dinosaur shook tail feathers for mating show
A University of Alberta researcher's examination of fossilized dinosaur tail bones has led to a breakthrough finding: some feathered dinosaurs used tail plumage to attract mates, much like modern-day peacocks and turkeys. U of A paleontology researcher Scott Persons followed a chain of fossil evidence that started with a peculiar fusing together of vertebrae at the tip of the tail of four different species of dinosaurs, some separated in time and evolution by 45 million years.

Environment - Earth Sciences - 03.01.2013
A New Way to Study Permafrost Soil, Above and Below Ground
A New Way to Study Permafrost Soil, Above and Below Ground
What does pulling a radar-equipped sled across the Arctic tundra have to do with improving our understanding of climate change? It's part of a new way to explore the little-known world of permafrost soils, which store almost as much carbon as the rest of the world's soils and about twice as much as is in the atmosphere.