Huntington's disease is caused by a single mutation in someone's DNA.

A normal protein, huntingtin, becomes warped and toxic. Over time, the toxic protein builds up, killing a person's brain cells and slowly robbing them of cognitive and motor control.

It affects about 30,000 Americans, often shows up later in life, and is fatal. Because it's a genetic disease, it can be passed down through families. It's cruel, unfair, and nobody deserves it.

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Family

"We're all here because we want to be the first humans able to fly."

"And we also want to live forever, see through walls, and shoot lasers from our eyeballs," the Ukrainian scientist tells me with a totally straight face. "But that's all science-fiction nonsense for now. So in the meantime, we're just making yogurt with an anti-aging protein, and things like that."

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Heroes