The Cleveland Metroparks Zoo announced Tuesday that a sloth bear cub was born back in December. The unnamed female cub weighed 16 ounces at birth and spent time bonding with her mother Shiva.

To time how fast magma moves, you need to know a little bit about chemistry. Picture a bizarre race: a sloth inching forward, a jogger picking up pace, an Olympic sprinter at full tilt…and deep ...