http://www.netvouz.com/pdboyer/tag/extinction?feed=rss pdboyer's bookmarks tagged "extinction" on Netvouz http://www.pbs.org/wgbh/nova/sciencenow/0403/01.html NOVA science NOW segment about a couple who study amber and found insects in amber with blood (like Jurassic Park). Blood carried preserved pathogens like malaria, leschmaiasis. They theorize that by time of asteroid impact 65 mya dinosaurs may have been on their last legs...or gone. pdboyer Thu, 06 Aug 2009 18:25:41 GMT http://www.scientificamerican.com/article.cfm?id=interactive-how-much-is-left Scientific American feature (interactive) about the planet's natural resources and how much of various things remain for our use. pdboyer Sat, 01 Jan 2011 04:13:51 GMT http://learning.blogs.nytimes.com/2011/04/06/will-it-happen-again-examining-mass-extinctions-on-earth/?nl=learning&emc=learninga1 Overview | What is a mass extinction, and why do some scientists think human beings may be responsible for the next one? What do we know about the past extinctions, including their likely causes? In this lesson, students learn about mass extinctions, map extinction events to a geologic timeline, and explore current ideas about whether human influences may lead to another major extinction event. pdboyer Thu, 07 Apr 2011 00:35:59 GMT