knoutmouseimage2Louisa Cockbill’s PhD research didn’t directly involve animals. But she knows when and why scientists use animals for some experiments and tests. Louisa lays out the reasons in an essay for Real Life Science. Louisa also has a Q&A with a new faculty member at Nature Jobs and her blog, Science FYI, breezily but thoroughly explains phenomena from platypuses to pox viruses. @LouisaCockbill image: NIH