"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these ...

Did You Know: Water is made up of H₂O molecules that are polar, meaning they have a slightly positive side and a slightly negative side. This polarity creates strong cohesion, causing water molecules ...

These interesting facts about the moon might make you look at the night sky a little differently Unusual moon facts worth knowing How many facts about the moon do you know? There are so many ...

Mothers are so familiar that sometimes their mysteries are overlooked. As I dove into the research for my new book Mom Genes: Inside the New Science of Our Ancient Maternal Instinct, I began to see ...