Need To Know

Feeling the Effects of Climate Change

Clip: Season 1 | 13m 36s

A rare but deadly fungal disease once known only in tropical climates is infecting people in the Pacific Northwest -- and researchers say climate change may be why. Need to Know medical correspondent Dr. Emily Senay examines how a warming climate is already affecting our health -- making allergies worse, affecting the spread of infectious diseases, and pushing the extremes of killer weather.

Aired: 05/19/11

Rating: NR

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