Will we soon be extinct?

Do you ever walk around with the vague feeling that you're going to die soon? That could be because -- according a recent study -- the Earth might be due for a catastrophic mass extinction.

Getty Images Although it can't be shown as the direct cause, global warming like we're experiencing now has taken place during past mass extinctions.

Population ecologists -- scientists who study the relationship between species and the environment -- from the Universities of York and Leeds in Great Britain took a closer look at the fossil record recently. They found that, historically speaking, we're living in a climate that traditionally has seen the extinction of large numbers of species.

See: http://science.howstuffworks.com/mass-extinction.htm.