For some who use in vitro fertilization to have a baby, more embryos are created than used -- leading to thousands in storage. Complicated legal, moral and personal questions over what to do with unused embryos.
To honor the 50-year anniversary of the first successful ascent of Mount Everest, and the 40-year anniversary of the first American ascent, "National Geographic" produced a 2-hour television event uniting the sons of mountain pioneers Sir Edmund Hillary, Tenzing Norgay Sherpa and Dr. Barry Bishop for a trek to the top of the world. Brent Bishop and mountaineering expert Pete Athans join Diane to talk about 50 years of exploring Everest.
- Pete Athans mountaineering expert
- Brent Bishop climber
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