Every year Vancouver resident Stephen Ottridge takes hamburgers or steak to his street’s annual summer block party. This year, against the backdrop of what looks to be the biggest sockeye salmon run in almost a century in the nearby Fraser River, he arrived with a salmon large enough to fill the whole barbecue. “There is…

Are warming conditions in the Arctic unprecedented in Earth’s history? It turns out that they are not. The Earth’s climate has gone through warming and cooling times in the past as can be seen in the fossil record that shows tropical species in regions now too cool to support them. These past variations were obviously…