It was around 1870 when the British physicist John William Strutt, better known as Lord Rayleigh, first found an explanation for why the sky is blue: Blue light from the Sun is scattered the most when ...

They’re in the air that we breathe, the water that we drink, and the food that we eat. Small, super tiny pieces of plastic ...

Getting kids to brush their teeth can often feel like ... or even tooth decay in some cases. "Food particles and bacteria build up, leading to unpleasant breath," says Goolnik.