This March, doctors successfully transplanted a pig kidney into a person for the first time in history. Mike Curtis is the CEO of eGenesis, the company that raised the pig whose kidney was used for the procedure. Mike's problem is this: How do you genetically engineer pigs to provide organs – kidneys, hearts, livers – for people?

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Imagine picking up your phone and ordering something from Walmart. Fifteen minutes later, a drone hovers over your yard, lowers your order down to you, and zips away. Adam Woodworth wants this to be so boring you don't even notice. He’s the CEO of Wing, a drone delivery company. His problem is this: How do you turn a flashy idea like a delivery drone into something as ubiquitous as a shopping cart?

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Psychedelics are going mainstream. The FDA has approved ketamine for certain patients with depression, and may soon approve MDMA for post-traumatic stress disorder (PTSD). But a fundamental question remains unclear: How do psychedelics work?

Gul Dolen is a professor of psychology and neuroscience at UC Berkeley. In a series of experiments, Gul has found evidence of a common mechanism that a wide range of psychedelics use to affect the brain. If Gul is correct, these drugs may be useful not only for people suffering from mental illness, but also for people dealing with neurological problems like strokes.

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