Why Do We Sleep? What Happens If We Don't?, The Environmental Impact of Trump's Wall, and more

Air Date: Feb 11, 2017 12:00 AM ET

Why Do We Sleep? What If We Don't?; Reversible saliva helps frogs eat; Radiation clouds a hazard for frequent flyers; Trump's wall more likely to stop wildlife than people; Lithium ion battery scientist wins Herzberg Gold; Why Isn't Jupiter Solid?