Episode description

Blood drinking bats can suck energy out of their protein-rich meals

Vampire bats are famous for exclusively drinking blood, but they’re also surprisingly good runners. And part of why that’s surprising is that blood contains very little carbohydrates or fat, which most other mammals rely on for fuel. So Kenneth Welch and Giulia Rossi at University of Toronto Scarborough ran bats on a specially-designed treadmill to find out more. They discovered that the bats can almost instantly convert the amino acids in their blood meals into usable energy. The research was published in the journal Biology Letters.

Canada’s most prestigious science prize goes to garbage science

Dr. Kerry Rowe of Queen’s University’s Civil Engineering Department has been awarded this year’s Herzberg Canada Gold Medal for Science and Engineering for his critical work in designing landfills that have to contain our waste and pollutants for generations.

UK sugar rationing in the 1950s led to lower risks of illness late in life

Sugar was rationed in the UK from 1940 to 1953 due to the war and postwar austerity, and so was consumed at about the level nutritionists now recommend. Dr. Claire Boone from McGill University was part of a new study published in the journal Science which found that the limited sugar intake by people in the UK during pregnancy and the first couple of years of life resulted in significant decreases in diabetes and hypertension.

Reinventing the wheel to understand how the wheel was first invented

The invention of the wheel is a milestone in human technological evolution, but it’s not clear how it happened. A new study combines design science and computational mechanics to virtually re-invent the wheel and understand the developments that could have led to the creation of the first wheel-and-axle system. The research, led by Kai James from Georgia Institute of Technology, adds support to the theory that the wheel was likely first invented by Neolithic copper miners in around 3900 BC. The research was published in the journal Royal Society Open Science.

Can high tech fishing gear limit losses of endangered whales?

The endangered North Atlantic Right Whale has had a long and rocky road to recovery after the depredations of commercial whaling. One of the major threats to the species today is fishing line entanglements. In a documentary, producer Sonya Buyting explores how researchers, like Sean Brillant from the Canadian Wildlife Federation, and fishers, like Greg Beckerton in New Brunswick, are trialing high-tech ropeless fishing gear to save the whales while still preserving the fishers’ livelihoods.