The heat and chills that come with fever are not only uncomfortable but also metabolically costly. Increased body temperature, however, can make all the difference when you’re sick.
Just as Darwin’s finches evolved specialised beaks to target prey, 3D modelling of 61 museum specimens reveals albatross beaks vary in size and shape for different diets. They can also drink seawater.
Humans have been making symbols for numbers for thousands of years. Different cultures developed their own symbols, but all use addition and multiplication, suggesting arithmetic is a universal truth.
New research dating and reading the rocks of the Flinders Ranges in South Australia reveals a fascinating story about how complex life emerged on our planet.
Despite the prevalent view that people with large bodies should simply eat less and move more, it’s nearly impossible to fight our genetic heritage or other factors that are not within our control.
Ancient humans chose to sleep less, which had evolutionary benefits. For modern humans, sleeping less is futile and detrimental, but fitness may be a powerful ally in today’s epidemic of sleep loss.