"Bats use a lot of different types of sounds, from singing to each other to find a mate and to using echoes from their tweets to find their way around, " explained Kate Jones, joint University College of London (UCL) and Zoological Society of London (ZSL) chairwoman of ecology and biology.

BBC: Website calls on people to become 'bat detectives'

Life sciences include such areas as biology, medicine, and ecology which study living organisms.

BBC: Medicon Village

"Introduced species are one of the principal causes of endangerment for half of endangered species, " says Daniel Simberloff, a professor of ecology and evolutionary biology at the University of Tennessee.

CNN: Fish tale

In a letter posted to family and friends, the woman who had graduated in 2011 from Western Washington University with a bachelor's degree in ecology, evolution and biology talked about falling in love with exotic cats.

NPR: Lion Killed Woman As She Was Cleaning Enclosure