The speakers we heard at this week’s TED Tuesday are full of guts, passion, persistence and confidence and are pulling off feats that make them seem just a tad bit crazy.

Steve Truglia is former UK Special Forces turned professional stuntman. He’s holds several amazing records but is now training for the craziest and most impressive of them all- a recording-breaking extreme high-altitude jump from space.

Lewis Pugh is a public speaker on environmental issues. In 2007, he made he first long-distance swim across the North Pole-to raise awareness of the thinning sea ice and the dangers of climate change. He swam 1K in x degree water. And he did it in a Speedo.

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