Physiology

British climbers recently reached the top of Mount Everest in record time. They inhaled xenon gas before the trip. But was that the decisive factor?

A workout boosts the fitness of your gut microbiome. This creates molecules that aid your immune system, metabolism, and more

There are real, physiological reasons why the same temperature feels different in April and October

Even modest amounts of air pollution may affect athletic performance, a new study finds

Using crutches for months is largely a thing of the past. Early weight-bearing has real benefits

Instead of using the controversial body mass index, or BMI, to assess weight, an international group of scientists proposes an approach that looks at how excess body fat affects health

The winter solstice is the culmination of a period every year when each cell in our body literally craves more light

The way scientists recognize one another’s work overlooks the seminal contributions of Black scientists. The Nobel Committees need to recognize how this excludes Black scientists from awards

Anglerfish have invisible fangs, narwhal tusks are extra-long canines, and more facts from the weird and wonderful study of teeth will astound you

A small study of people with congenital anosmia found changes in breathing that suggest the condition may affect more than just the ability to smell

Snot is one of the immune system’s efforts to ditch a virus, but how much we produce when sick is a slippery subject

The amount of water and electrolytes needed for proper hydration vary from person to person