From their diet to their diseases, koalas are pretty special. Now researchers have sequenced the koala’s genome, unlocking the secrets that make these fuzzy fellas so unique. The genome is revealing everything from how koalas cope with munching poisonous eucalyptus leaves, to how they respond to chlamydia infections. The hope is that these insights will not only help us understand these fascinating marsupials, but also aid conservation efforts across Australia.
Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution.WATCH NOW
Big and boisterous, Spotigy and Buri appear to be standard 1-year-old bulls. But a quick glance at their furry heads and closer examination of their genes would reveal that they're unique specimens—hornless Holsteins. The bulls are the result of a gene-editing experiment by Alison Van Eenennaam and colleagues at UC Davis, along with researchers at the biotech company Recombinetics, who aim to develop hornless cattle that might one day replace cows whose horns must be physical removed through expensive and painful methods. Van Eenennaam explains how the technique of "precision breeding" can be a faster and more effective means of de-horning cows compared to traditional breeding methods.WATCH NOW