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.

In March of 1869,  the chemist Dmitri Ivanovich Mendeleev made a presentation to the Russian Chemical Society and outlined patterns in elements that led him to postulate his periodic table of the existing 63 elements. Since a new one was being discovered about once per year, he also made sure to leave room for additions and even hypothesized a few more.

Chemistry was the future, understanding elements was key, he and others believed, and they turned out to be right. If you are reading this article on a cell phone, notes New York University, you're holding at least 30 different naturally-occurring elements, including lithium. 

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.

Blocking a key regulator of the immune system helps unleash the body's natural defenses against several forms of cancer, a discovery which opened up a new era of cancer immunotherapy. 

Now researchers have flipped this script and found that, when impaired, a molecularly similar regulator can cause the damaging immune system attacks on skin and organs that are the hallmark of the autoimmune disease lupus. Though still just in the exploratory stage, mice are not little people so this does not translate to humans, the work suggests a way to restore function of this inhibitor which could one day provide new therapy to treat the disease.
A joke in nutrition circles is that while you once needed to be rich to be fat, now you need to be rich to be thin. Scientific progress has given us cheap food, anyone can afford to eat well, and after an existence of worrying about food availability it takes generations for culture to change to not eating as much as we can. Rich people, though, have gym memberships.

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.

Since 2007, claim lines with diagnoses of Lyme disease increased nationally 117 percent, according to a new white paper.

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.

A new study found that people given accurate statistics on a controversial issue misremembered those numbers to fit commonly held beliefs.

That means the source of fake news is often not malevolent organizations manipulating social media, it is people convinced they are correct