You know the Slinky, but have you ever wondered how it walks down stairs, or why it appears to hang in midair when dropped? Scientists have peered into these phenomena for decades, but now a Princeton ...

When you drop a Slinky, what falls to the ground first: the top, the bottom, or everything all at once? Derek Muller, who created the popular YouTube channel Veritasium, first took on this puzzling ...