Environmental Science: What to do during the cold winter months – by Dave Gervais

Source: Even during the winter, there are some wet swampy areas that defy freezing. Sometimes it’s the current; sometimes it’s the heat from decomposition that keeps the water from freezing. Alternatively chopping through ice in a shallow swampy are would also give you access to the bottom detritus. A sample was taken from my backyard pond on Dec 10th.

Sample: When taking a sample, ensure that there is plenty of vegetation. Some will still be green. You may find Duck Weed, or some kind of filamentous algae. A 500 mL sample will provide enough material for several classes. I re-purposed a used blister pack to act as well slides for this activity. When glued to popsicle sticks, my mechanical stage easily gripped this. That allowed me to have 6 samples on the stage at once.

Thanks for the great ideas Dave!!!!!!!!!!!!!!!

Stay warm

 

What is the tragedy of the commons? – Nicholas Amendolare – TED Ed

Is it possible that overfishing, super germs, and global warming are all caused by the same thing? In 1968, a man named Garrett Hardin sat down to write an essay about overpopulation. Within it, he discovered a pattern of human behavior that explains some of history’s biggest problems. Nicholas Amendolare describes the tragedy of the commons.

Lesson by Nicholas Amendolare, directed by TED-Ed.

Will You Still Eat Raw Fish After Watching This Video?

Have you ever noticed that warning about raw or undercooked seafood at the bottom of restaurant menus? Ever wondered why it’s there? Because fish carry a ton of parasites, and if they aren’t prepared correctly then those parasites can make it into your body. But it turns out, this fishy intersection with the wild world of parasites can teach us a lot about how these moochers help keep ecosystems healthy, and why we should protect them. Continue reading

Too expensive to save? Why the best way to protect endangered species could mean letting some go

The provocative new approach aims to protect more animals by prioritizing those that offer the best return on investment, but it could mean saying goodbye to some well-known species

Source: Too expensive to save? Why the best way to protect endangered species could mean letting some go

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