A Harvard professor who's studied aging for 30 years says one of the most powerful longevity tools on Earth is free.Fasting.David Sinclair explained what happens at the cellular level when you stop eating food for long periods of time:Your body has proteins called sirtuins. They're the conductors of your cellular orchestra - telling each gene when to turn on and off, keeping every cell's identity intact.But sirtuins need fuel called NAD to function. By age 50, your NAD levels drop by HALF. Your

Chaperone - Movie

Kings Dominion's new chaperone policy to start the season; Hanover sheriff addresses potential 'teen takeover'

Chaperone in biology

Chromosome structure - Buy Royalty Free 3D model by Ebers