Game-changing prostate cancer test, and magnetic turtles

In this edition of The Naked Scientists: A new screening test for prostate cancer that can, the inventors claim, accurately catch 96% of cases, and early. Also, why you might want to eschew artificial sweeteners: a new study suggests they can accelerate arterial disease. And, scientists show that turtles can sense magnetic fields to find their way around... Like this podcast? Please help us by supporting the Naked Scientists