For decades, the question of how to keep a Slinky in perpetual motion has befuddled scientists and toy owners alike. Now, one man may have the answer to ensure the Slinky fun never stops. Matthias ...

When President Trump arrived at the United Nations this week to address the General Assembly, his entrance didn't go as planned. A video widely shared on social media shows Trump and first lady ...

A video widely shared on social media shows Trump and first lady Melania Trump stepping onto an escalator that suddenly stops working. After a pause, Trump looked around as the first lady began ...

President Trump called his escalator mishap at the United Nations "sabotage." The U.N. says the White House team triggered a safety mechanism. We... How escalator safety mechanisms work — and why they ...