steal their life-sustaining fluids. blood-feeding likely evolved repeatedly over the course of our planet's history—"perhaps as many as times," according to kvist. bloodsucking creatures have no common ancestor, as the behavior has cropped up independently in birds, bats, insects, fish and other animal...
filter that kept particles out. louis pasteur ( – ) exposed boiled broths to the air, in vessels that contained a filter to prevent particles from passing through to the growth medium , and also in vessels without a filter, but with air allowed in via a curved tube so dust particles would settle and not...
phytobiotics, the trained chemist with a focus on organic-synthetic chemistry, received her phd in technical biochemistry from the university of stuttgart. francesca was involved in the development and characterization of new medicines in different therapeutic areas. a few years ago, she moved to the animal...