speciation

I'm not a biologist but I thought this article was interesting. I'd be interested in comments from those more knowledgeable than I.

In the Religion sub-forum, I am arguing with a poster who claims that the 1.5 million cubic feet of space in Noah's Ark was enough to carry that animals because all the species we see today are the result of speciation occurring in the past 4400 years. In other words Noah took a pair of each...

I am a bit of a dilettante in biology. I've read Asimov in my earlier years, watched innumerable videos by Ken Miller, Aron Ra, cdk007, and others, and read lots of articles. I'd like to find out whether my notion about speciation is correct. Species are usually defined as groups of animals...

As in, for a new species B, non-fertile with species A, to arise from species A. Any ideas? What's the shortest imagined (or recorded?) time? P.S. Please don't tell me this is a meaningless question. It's not.

I was reading the article on Darwin in National Geographic and stumbled on a bit that confused me ... There was a description of how, when a group is isolated by time or space from its main population, it will vary from that population over time. Generally become more adapted to the...

http://www.sciencedaily.com/releases/2003/12/031208141435.htm Let the quibbling over definitions begin.

I was chatting with an acquaintance the other day about evolution. He's kind of a fence sitter on the question of speciation. He said that he would be more convinced if there was an observed example of speciation, in the wild, that involved one or a few point/small mutations. Most of the...