Here are some URLs to try:
Definition->
http://www.talkorigins.org/faqs/macroevolution.html
Species concepts and observed speciation->
http://www.talkorigins.org/faqs/faq-speciation.html
More observed speciation->
http://www.talkorigins.org/faqs/speciation.html
Yes, the "tamu" domain indicates Texas A&M University,
Aggieland in College Station, Texas.
Dave Schmidly came to TAMU years ago as new faculty. When
he got word of a stranded right whale on the Gulf coast, he
drove down to examine it. Returning home that evening, he
was treated to the news anchors whooping it up: "Did you
hear about the Aggie professor who went to pick up a ten-ton
whale in a half-ton pickup?"
;-)
Wesley