Radiation and Health #37
December 11, 2009

Image from Mad House Photography
Dr. Marc MacKenzie, medical physicist, discusses radiation: why a little can be good, why a lot can be bad, and why radiation is more important than you think. And on Speaking Up, we discuss The James Randi Educational Foundation with Bart G. Farkas.
Guests:
- Marc MacKenzie
- Bart Farkas

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