May 2, 2013 – 4:15 pm | Comments Off

Windows Media … Diane speaks with renowned physician and social activist Paul Farmer. In his latest book, he encourages young people to tackle the greatest challenges of our times, from global health and poverty to …

Read the full story »
audio

blogs

books

news

video

Home » futurepedia

Extinctions

Submitted by on September 29, 2009 – 9:47 pmNo Comment

Biological species emerge and disappear in the natural course of evolution. There have been times in the Earth’s past when mass extinctions have occurred, causing a large number of species to disappear in a short time. This is generally believed to have happened due to external pressures on ecosystems, or sudden shocks and catastrophic events. We are currently going through such a period due primarily to the impact humans have had on the environment, and on plant and animal habitats. Some scientists believe that 50% of existing species may become extinct in the next 100 years.

NSRW_Dodo_560-310Credit: Wikimedia Commons

Comments are closed.