Blog #5 There have been 5 major extinction events throughout history, are humans impacting the 6th? Why or why not?

I believe that humans are impacting the earth's 6th extinction by destroying our current environment and destroying our ecosystems. Humans nowadays are ruining the environment by disrupting the natural way of things, such as off shore oil drilling and the mistakes that follow it. Such as the BP oil spill, millions of animals have died or suffered because of it. Humans are disrupting the natural ways of earth also with nuclear warheads. The United States has around 2000 nukes, while russia has 9000, if those things were to ever go off at once, the amount of radiation would surely cause many species to go extinct.
http://www.carolmoore.net/nuclearwar/