When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly... continue reading
posted by eric3579 1 decade 2 months 3 weeks ago • 4,780 views • 4:34Videos (23) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YouTube Description: In which John Green teaches you about the United States as it was in the 1990s. You'll remember from last week that the old-school Republican George H.W. Bush had lost the 1992 presidential... continue reading
posted by PlayhousePals 1 decade 3 months 2 weeks ago • 247 views • 15:38One of the more interesting planets in our solar system, mainly due to it's unique orbit. Find out how Uranus was almost named George and how it received its current name, why it is blue, and other bits... continue reading
posted by reiwan 1 decade 4 years 3 months ago • 1,047 views