The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Sex, speciation, and fishy physics - updated July 2011
For the summer holidays, Evo in the News will be revisiting past news items to bring you up-to-date on recent research and developments. In March of 2009, we reported on how the physics of light seems to have spurred speciation in Lake Victoria's cichlid fish. This summer, we report on new evidence that backs up this hypothesis — and that highlights the threat posed to these fish by pollution that clouds the lake's waters.
The Arthropod Story
This interactive investigation delves into the amazing world of the arthropods and examines their success and their evolutionary constraints.
This site was created by the University of California Museum of Paleontology with support provided by the National Science Foundation (grant no. 0096613) and the Howard Hughes Medical Institute (grant no. 51003439).
