July 7, 2013
How big a flood does it take to inspire homeowners to plant signs protesting insurance-company policies, to generate arguments over whether the Stampede should proceed, and to produce such outpourings of community spirit that Herald columnist Kevin Brooker is almost euphoric about living in the flood zone?
In the case of the Elbow River, a pretty big one. In the case of the Bow River, a not-so-big one. Read more on the Calgary Herald...
The latest Permian extinction that took place approximately 252 million years ago was the most severe in Earth’s history and led to the loss of more than 90 per cent of marine life.
Until now, it was believed that the main driver for the extinction was linked to the loss of oxygen in global oceans. But a team of University of Calgary researchers from the departments of Geoscience and Physics and Astronomy recently discovered — contrary to common belief — that the ocean shelf environment actually remained under oxygenated conditions during the latest Permian mass extinction.