Invasive Species Attacking Antarctica, Saving Asian Unicorns, and More

It may be cold and inhospitable in Antarctica, but that hasn't stopped a whole host of invasive species from settling there -- a fact that has biologists quite concerned.
We also have protected "unicorns," squids bothered by noisy oceans, thriving sardines, gorillas in war-torn Congo, rare river dolphins killed for bate, and and more in the Week in Animal News.

Article continues: The Week in Animal News: Invasive Species Attacking Antarctica, Saving Asian Unicorns, and More (Slideshow)