Instructional Video4:49
SciShow

Why Is Sperm Count Dropping?

12th - Higher Ed
Sperm count in Western countries has been dropping for over a hundred years, and scientists have some ideas as to what’s behind this swimmer shortage.
Instructional Video
PBS

Pbs Learning Media: Environmental Public Health: Green Chemistry

9th - 10th
In this video adapted from 'Contaminated Without Consent,' participants in a national study talk about the toxic chemicals - including phthalates, BPA, and brominated flame retardants - found in dust samples from their homes. Scientist...