The threat of invasive species – TED Talks, Jennifer Klos

Massive vines that blanket the southern United States, climbing high as they uproot trees and swallow buildings. A ravenous snake that is capable of devouring an alligator. Rabbit populations that eat themselves into starvation. These aren’t horror movie concepts – they’re real stories. But how could such situations exist in nature? Continue reading

How Wolves Change Rivers

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 do wolves change rivers? George Monbiot explains in this movie remix.  Thanks to Jesslin of Oakville, Ontario for the suggestion.   Continue reading

Sighting of Northern Saw-whet Owl

Northern Saw-whet owl

Students with owl

Imagine our excitement when a Northern Saw-whet owl was discovered near our school property! When my Environmental Science class examined the beautiful creature closely, we saw that it had been banded as part of a U.S. Government program. We reported it, using the number indicated on its leg band, and are anxiously awaiting the information regarding where its journey began. How exciting to be a part of an international investigation on behalf of the Saw-whet owl! It is very rewarding for the students to be able to see, touch, and experience an animal compared to learning about it from a book.

Jocelyn Paas
Secondary Curriculum Committee Chair, STAO 2012-14
Vice President, STAO Executive 2014
Jocelyn_Paas@stao.org
Science Teachers’Association of Ontario/L’Association des professeurs de science de l’Ontario