Good mothers=bad guide dogs, glaciers warming the world, Greek Mass grave, armoured dinosaur, super-supernova

Air Date: Aug 12, 2017 12:00 AM ET

Tough love means good guide dogs; Massive ice sheets weirdly warmed us up; Mass grave could be executed rebels; Armoured dinosaur still had to hide from predators; A super-supernova could happen in our neighborhood; Why does scar tissue persist?