Science
How does copper kill microbes like bacteria?
Bacteria actually need a certain quantity of copper to function. They’ve evolved pumps in their cell wall to bring copper…
Is it healthier to sleep on your right side?
People who have heart failure, a condition in which the heart no longer pumps blood effectively, should avoid sleeping on…
What makes glass transparent?
Light can only be absorbed by imperfections or intentional additions of glass that include substances with weakly bound electrons.
Why Is Mount Everest Getting Taller Each Year?
There is still considerable doubt about what the future holds for Everest. The same holds true for the most recent…
Monumental Stone Age structures discovered in Arabia
Almost ten thousand years ago, nomadic hunters of the Stone Age constructed mile-long traps for wild animals in green Middle…
There is one simple conductivity formula behind all metals
A remarkably simple mathematical concept underlies the conductivity of all types of metals.
What effect does the time of day have on weight loss?
Eating breakfast as your biggest meal will not increase your calorie expenditure, but it will help you feel full much…
Einstein’s equivalence principle reconfirmed
Einstein’s theory of relativity relies heavily on the weak equivalence principle (WEP). The MICROSCOPE satellite experiment has provided the most…
Why do men go bald more often than women?
Women often become aware of hair loss only after 50 percent of their hair has been gone.
Why is it so hard to get the perfect coffee crema for espresso?
The crema has to be sturdy enough to withstand the weight of a teaspoonful of granulated sugar for a few…
Why are tomatoes first green and then red?
Both animals and people attribute the meanings of “ripe,” “juicy,” “tasty,” and “edible” to the color red.
Why do we get wrinkled fingers after bathing?
Because of the wrinkles formed on the bottom of our feet, our ancestors did not slide as easily on underwater…