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Trophic Cascade

Celebrating Earth Day the Carnivore Way

Cristina Eisenberg | Posted 06.21.2015 | Science
Cristina Eisenberg

Keystone predators, such as wolves, control prey numbers and behavior. On the lookout for wolves, wary elk eat more sparingly. This releases shrubs and saplings from browsing pressure, improves habitat for other species, and increases biodiversity. These cascading effects are based on powerful evolutionary relationships.

The ESA: Taking Noah's Ark Into a Brave New World

Cristina Eisenberg | Posted 06.07.2015 | Green
Cristina Eisenberg

In the past 42 years we've put over 2,000 species of animals and plants on the ESA ark; only 30 have succumbed to extinction. However, some experts protest defining ESA success in terms of species still on the list rather than by the number of species that have recovered.

I'm With Stupid: River-Changing, Liberal Wolves Kidnapped My Aunt

Todd Hartley | Posted 05.14.2014 | Comedy
Todd Hartley

Every time the British guy said the word "deer," the movie showed footage of elk. If the film's director doesn't know a deer from an elk, why should I trust him to get anything else right?

Fake Fights About Big Forces

Mary Ellen Hannibal | Posted 05.10.2014 | Green
Mary Ellen Hannibal

The rest of us don't need to have absolutes declared about nature. Is the predator absolutely the big force, or is the vegetation absolutely the big force? Wait a minute, maybe the hippos are the big force?

Why Killed Off Big Carnivores? Scientists Offer Surprising New Theory

| Posted 06.27.2012 | Science

By Kate Wong The impact of Homo sapiens on the environment over the past few hundred years has been so profound that some scientists term this chapte...