Pennsylvania State University

Wolf mange part of nature's cycle

Mange and viral diseases have a substantial, recurring impact on the health and size of reintroduced wolf packs living in Yellowstone National Park, according to ecologists.

Sep 10, 2012 5 / 5 (1) 0 | with audio podcast

Probing Question: What is Bitcoin?

In 1729, when he was 23 years old, Benjamin Franklin authored a pamphlet titled "A Modest Inquiry into the Nature and Necessity of a Paper Currency." The revolutionary idea he advocated? Paper money printed ...

Jul 10, 2014 3.4 / 5 (5) 3