Zero-gravity highs and history-making lows - a podcast by BBC World Service

As a child Kathy Sullivan always dreamed of adventure, little did she know she would grow up to make history both in the depths of the ocean and in space. Kathy was one of Nasa's class of 1978, the first recruitment drive that brought women into its astronaut ranks. In 1984 she became the first US woman to complete a spacewalk and went on to take part in two more missions, including the 1990 launch of the Hubble Space Telescope. After leaving Nasa in 1993, she went on to serve as chief scientist at the National Oceanic and Atmospheric Administration and later as its administrator. Last year - working with US adventurer Victor Vescovo - she made history once again, this time becoming the first woman to reach the lowest known point in the ocean.

Presenter: Emily WebbProducer: Thomas Harding Assinder

Picture: Kathy Sullivan's spacewalkCredit: NASA

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