Wildfires turning boreal forests from carbon sinks to carbon sources

forestfire

Bigger, hotter wildfires are turning Canada’s vast boreal forest into a significant new source of climate-changing greenhouse gases. The shift, which may have already happened, could force firefighters to change how they battle northern blazes, says Merritt Turetsky, an ecologist at the University of Guelph and co-author of a recent study that appeared in Nature.

Tiny radio transmitters provide insect migration clues

Samantha Knight

Wind and warmth can improve travel time for the billions of insects worldwide that migrate each year, according to a first-ever radio-tracking study by University of Guelph biologists. Researchers equipped monarch butterflies and green darner dragonflies with radio transmitters and tracked them through southern Ontario and several northern states. They wanted to learn how environmental