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What science says about the risks of energy drinks; The Sherpas' super-power; and more

What science says about the risks of energy drinks; The Sherpas' super-power; When did whales get super-sized?; Do I look fat in this face?; Out of Africa, or maybe Europe?; Quirks & Questions: Are humans the only mammals with different blood types?
What science says about the risks of energy drinks; The Sherpas' super-power; When did whales get super-sized?; Do I look fat in this face?; Out of Africa, or maybe Europe?; Quirks & Questions: Are humans the only mammals with different blood types? 54:00