biology

According to a new DNA analysis study, dogs have been man’s best friend for 33,000 years. The question of where and when dogs first split off from wolves has long been a topic of controversy among academics. Some researchers say canines first split off from wolves in Europe; others say it happened in the Middle… Read more

They don’t use microphones or seranade like Don Quixote. But scientists have known for a long time that male mice belt out something like love songs to females when the time seems right to them. What they didn’t know, until a University of Delaware researcher developed a sophisticated array of microphones and a sound analysis… Read more

An unexpected law of nature which keeps large predator numbers down across the spaces of the Earth and its oceans was uncovered this week by ecologist researchers at McGill University. McGill PhD student Ian Hatton wondered why there aren’t more lions, when he started looking at the proportion of predators to prey across dozens of… Read more

Geckos use dry adhesion, involving microscopic hairs on their toe pads, as well as other aspects of internal anatomy, to climb vertical walls and run across ceilings, a skill that has long fascinated scientists. It’s a particular mystery how some species as much as 100 times heavier than others can use adhesion so effectively. Geckos… Read more

How tiny movements of cells can quickly transform the makeup of an entire tumour is revealed by computer models of developing cancers. The models support laboratory studies that investigate how tumours evolve and spread, and why patients can respond well to therapy, only to relapse later. University of Edinburgh researchers used mathematical algorithms to construct… Read more