Catalyst: Racing against infectious diseases

“Catalyst” follows ASU professor and microbiologist Cheryl Nickerson as she seeks to find cures for remaining strands of infectious diseases.

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In this segment:

Cheryl Nickerson, professor, Biodesign Center for Immunotherapy, Vaccines and Virotherapy

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American Masters: "Michael Tilson Thomas: Where Now Is"

Discover the Grammy winning conductor, pianist and composer. A National Medal of Arts recipient and longtime music director of the San Francisco Symphony, he helped set the standard that an American orchestra should champion modern American music.

Enjoy Metallica and the San Francisco Symphony: S&M2

Join the ultimate heavy metal band as they combine forces with a nearly 80-member orchestra to perform Metallica fan favorites.

'Age of Nature'

Explore humanity’s relationship with nature and wildlife, as scientists and conservationists from all over the world examine ways we can restore our planet.