Gerhard Herzberg bends over the piles of paper on his big desk. He is overwhelmed. As director of the Pure Physics Department at Canada’s National Research Council, the fall of 1959 is a very busy time for him. Jack Shoesmith, his research technician, comes into the sun-filled office and walks up to the tall windows overlooking the Ottawa River. He says, casually, “I have an...

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Q: Are double yolked eggs ever viable? Can they be fertilized? If so are they to be fertilized once or twice? Is there an evolutionary advantage to the continuation of "double-yolkism" in chickens' eggs?

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In the news

Take two parasites and call me in the morning

July 26, 2014

Two recent papers suggest that some parasites may be good for us. UBC botanist Laura Wegener-Parfrey and Julius Lukeš of the Canadian Centre for Advanced Research question our traditional perception of intestinal parasites. The papers offer a systematic review of cases where humans have deliberately ingested parasites for research and suggest that certain parasites could have beneficial effects on conditions such as Crohn's disease and Irritable Bowel Syndrome. More at Science Media Centre of Canada.

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