Species normally evolve gradually in a process that unfolds over thousands -- sometimes millions -- of years. But scientists say they have discovered an Alaska fish population that appears to have ...

Across rows of floor-to-ceiling shelves in the basement room of the Harvard Museum of Comparative Zoology, mason jars labeled with scraps of paper are filled to the brim with silver, finger-sized fish ...

Evolution doesn’t have to take thousands of years. We know that from artificial selection and observations with human-altered landscapes. But how rapidly can it happen in the wild? Researchers ...

After Alaskaâ??s 1964 earthquake stranded salt water stickleback fish in freshwater ponds, it took just 50 years for them to evolve into happy pond dwellers.

March 27th, 1964: the world's second-most powerful recorded earthquake hits Alaska. <<historic movie clip: "In Anchorage, Alaska's largest city, buildings collapse. Streets and homes slip into the ...

The threespine stickleback, a small fish found throughout the coastal areas of the Northern Hemisphere, is famously variable in appearance from one location to another, making it an ideal subject for ...

ONE day in June, when examining a very small stickleback under the microscope, I was surprised to find it infested by numbers of infusoria, evidently parasitic upon it. This led me to examine others ...