Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

Hi, everyone, welcome.I'm Greg, and this is…Mwaksy, where are you?Hello? Hello! I'm here!I'm sorry I'm late, I was setting up a demo. Sure!So, I have a number of bricks here in this wheelbarrow,and I ...

It might look like the sea, but this is actually a huge lake! My name is Charlie, and today I’m at Lough Neagh in Northern Ireland to find out everything I can about lakes. “Lough” is the Irish word ...

In 2021 PCG reported on a singular scientific experiment: rats named Carmack and Romero had been taught how to 'play' Doom. I use the inverted commas because, cute and cool as it was, the question of ...

Aaron Hankin is currently working for Dow Jones MarketWatch. He has 10+ years of professional experience in the financial markets. The U.S. economy seems to be doing fine. Growth, for the most part ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Yarilet Perez is an experienced multimedia journalist and fact-checker with a Master of ...