Kristina Byas is contributor at Investopedia. As a personal finance expert, she has lent her insights and knowledge to numerous financial publications. Her articles have helped readers navigate the ...

A clean mentalism moment where a spectator silently thinks of a country from a list. Without asking questions or hearing a single word, the prediction is revealed — already written and perfectly ...

A team of New York University scientists has created a gear mechanism that relies on fluids to generate rotation. The invention holds potential for a new generation of mechanical devices that offer ...