The extent to which humans are monogamous has long been subject to debate. One scientist says studying sibling genetics gives a clear answer.

Short snouts and a flat profile -- within a span of 100 years, humans have significantly changed the shape of the skulls of German domestic pigs. This is likely down to new breeding practices ...

Grace Carroll does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...