"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 ...

From the surprising truth about vegetables to the hidden secrets of figs and the origins of McDonald's drive-thru, these fun facts will leave you amazed and enlightened. Get ready to see the world ...

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 to attract one ...