Salmon hearts get oxygen boost from enzyme

Salmon have an ace up their sleeve—or in their gills—when facing challenging conditions that could affect their hearts, according to a study led by a University of Guelph researcher.

Are fish the greatest athletes on the planet?

When you think of the world's greatest athletes, names like Usain Bolt generally spring to mind, but scientists have discovered the best athletes could well be found in the water, covered in scales.