Here are some links to numbers and graphs:
http://www.pbs.org/wgbh/evolution/library/03/2/l_032_04.html
http://www.whole-systems.org/extinctions.htmls
http://www.sourcewatch.org/index.php?title=The_Sixth_Great_Extinction
The rate to extremely high and that rate will continue (probably increase) if nothing is done.
Here are some links to numbers and graphs:
http://www.pbs.org/wgbh/evolution/library/03/2/l_032_04.html
http://www.whole-systems.org/extinctions.htmls
http://www.sourcewatch.org/index.php?title=The_Sixth_Great_Extinction
The rate to extremely high and that rate will continue (probably increase) if nothing is done.