Humans have a “natural” lifespan of around 38 years, according to a new method we have developed for estimating the lifespans of different species by analyzing their DNA.

Extrapolating from genetic studies of species with known lifespans, we found that the extinct woolly mammoth probably lived around 60 years and bowhead whales can expect to enjoy more than two and a half centuries of life.

Our research, in Scientific Reports, looked at how DNA changes as an animal ages – and found that it varies from species to species and is related to how long the animal is likely to live.

While definitions vary, to “cancel” in today’s lingo means to remove people and cultural products from consumption and popular conversation. This is done in light of actions that make them unworthy of praise or critique.

Christmas and mistletoe: have you ever simply asked yourself … why? I have studied plant parasites like mistletoe for almost ten years, and I’m here to tell you that the answer is absolutely fascinating.

In Norse mythology, Baldur (younger brother to magic-hammer-wielding Thor), was the subject of a premonition from his mother Frigg, who could see the future: he would be killed. Frigg tackled this head on, extracting an oath from every object on Earth, to avoid harming her son. This was agreeable to all … except mistletoe, which was overlooked.

The holiday season brings up memories and emotions for people of all ages, but elders are often overlooked. This time of year also can provide an opportunity to become more alert to signs of elder abuse, aware of how to help and available to begin sincere conversations with older adults about their perceptions of abuse and the remedies they recommend.

Medieval doctors had to acquire a range of skills including an ability to read Latin texts, a working knowledge of the bodily “humours” and an understanding of the rudiments of blood circulation. Their diagnostic techniques were largely limited to examining a patient’s urine: they could match the colour of the urine to that on a chart, such as one now in the Bodleian Library, which offers an alarming spectrum of hues. After diagnosis, one of the most important treatments was bloodletting, for which physicians used detailed astrological charts.

In late November 1999, a TV producer called me about an alarming report that 44,000 to 98,000 Americans were being killed each year by preventable errors in hospitals and another 1 million were being injured.

Could that be true? Based on my research, I replied, the estimate seemed low.