John McCain: How did Vietnam change you?

John McCain: Well I didn’t come back a very different person. But what I did was I fell in love with America because I was deprived of her company. And I began to appreciate the wonder, and freedom, and liberty that we enjoy. In my time in prison I was privileged to observe 1,000 acts of courage, and compassion, and love. And the ones I served with – the ones I know best and love most and . . . When people assume that it was all a terrible experience it’s not true. Because the dearest and best friends and comrades I have in my life are those that I had the privilege of serving with, and those that inspired me through their leadership to be capable of things that I otherwise not . . . would not have been capable of. Recorded on: 11/20/07

In Vietnam, McCain realized he missed Americas company.

Meet the Bajau sea nomads — they can reportedly hold their breath for 13 minutes

The Bajau people's nomadic lifestyle has given them remarkable adaptions, enabling them to stay underwater for unbelievable periods of time. Their lifestyle, however, is quickly disappearing.

Wikimedia Commons
Culture & Religion
  • The Bajau people travel in small flotillas throughout the Phillipines, Malaysia, and Indonesia, hunting fish underwater for food.
  • Over the years, practicing this lifestyle has given the Bajau unique adaptations to swimming underwater. Many find it straightforward to dive up to 13 minutes 200 feet below the surface of the ocean.
  • Unfortunately, many disparate factors are erasing the traditional Bajau way of life.
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Golden blood: The rarest blood in the world

We explore the history of blood types and how they are classified to find out what makes the Rh-null type important to science and dangerous for those who live with it.

Abid Katib/Getty Images
Surprising Science
  • Fewer than 50 people worldwide have 'golden blood' — or Rh-null.
  • Blood is considered Rh-null if it lacks all of the 61 possible antigens in the Rh system.
  • It's also very dangerous to live with this blood type, as so few people have it.
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Scientists create a "lifelike" material that has metabolism and can self-reproduce

An innovation may lead to lifelike evolving machines.

Shogo Hamada/Cornell University
Surprising Science
  • Scientists at Cornell University devise a material with 3 key traits of life.
  • The goal for the researchers is not to create life but lifelike machines.
  • The researchers were able to program metabolism into the material's DNA.
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