If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have evolved testicles of all different sizes. In almost all these separate cases, ...

Researchers investigated when the body starts exerting more energy to keep itself cool at high temperatures. They found that this upper-temperature limit lies between 40℃ (104F) and 50℃ (122F) when ...

A decade-long study has shown that household environments play a significant role in long-term chemical exposure, and that ...

Human brains contain higher concentrations of microplastics than other organs, according to a new study, and the amount appears to be increasing over time. In the study, published in early February in ...

A new Yale study provides a fuller picture of the genetic changes that shaped the evolution of the human brain, and how the process differed from the evolution of chimpanzees. For the study, published ...

The same body can look very different depending on whether you approach it as a biologist, a doctor, or a mathematician.

Stem cells age faster and become functionally exhausted in low Earth orbit, making crewed long-duration space travel even more challenging. When you purchase through links on our site, we may earn an ...

Share on Pinterest The human body experiences rapid changes around age 50, according to a new study. Maskot/Getty Images Past studies show that human aging doesn’t necessarily happen at the same pace ...

A 3D analysis comparing the way fabric falls on a human body versus a low-relief sculpture shows that the Shroud of Turin was not based on a real person. When you purchase through links on our site, ...

The imprint of a human-like figure on the Shroud of Turin may have come from a shallow sculpture and not an actual person, according to a new study that sheds more light on the world’s most studied ...