Sunday, October 2, 2011. I had tested something and i forgot to amend it. some spamming email gave me an indication and what was wrong. thank you spammer but do you have the . Monday, August 17, 2009. Saturday, July 25, 2009.

Thursday, October 23, 2008. Friday, June 6, 2008.

3 million years ago our very earliest ancestors invented their first primitive tool, the split stone, which they used for cutting and scraping. Modern humans first appeared about 200,000 years ago. As inventions and discoveries added to one another, human civilization, technology, and science advanced and evolved. Rarr; Biologists and Health Scientists. Rarr; Geologists and Paleontologists.

Did you know that these scientists impacted how we live today? Think of how our life would be without electricity or vaccines, to prevent diseases. Imagine having to use candlelight to see in the classroom! Visit the Resources for Students page to download your graphic organizer and for additional information. Overview of the Famous Scientists.