Dr. Sheyna Gifford tells us about her year living on a volcano in Hawaii with just five other people as part of HI-SEAS IV, a NASA project to simulate life on Mars. Sheyna was the space doc on the mission, accompanied by a physicist, an architect, an engineer, a biologist and a commander.

Living in a 1200 square foot biodome and going outside only in their space suits, the crew studied the psychological effects and group dynamics that could be at play when astronauts make it to Mars. On Nerdette, Sheyna tells Tricia what the year was like and how she got through it. She also gives some excellent homework.

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