Why do endurance athletes load up on carbohydrate-containing foods before a big event? why don't they just fill up on fat and protein as well?

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?