The tagline for the iBioSeminars website is "Bringing the World's Best Biology to You" and they deliver on their promise by offering talks on genetic engineering, nanotechnology, and other fields of scientific endeavor. Visitors are welcome to scan through all of their offerings, but they would do well to start with this authoritative look into the history of regeneration. Offered by Professor Alejandro Sanchez-Alvarado of the University of Utah School of Medicine, this three-part talk takes visitors through the world of regeneration via thoughtful examples, complete with illustrations, slides, and other relevant visual aids. In his talk, Alvarado talks about how the ancient Greeks were fascinated with the idea that animals could regenerate various body parts. He continues by discussing experimental work in the field, bringing the viewer up to the present day. It's a remarkable talk, and visitors can also download it to watch on their iPod or other device.