ELI5 Asteroids - why NASA wants to catch an a...

Why was VitaminWater sued over the 33g of sugar in each bottle? How do our bodies work with artificial sweeteners? Why do diet sodas taste different to regular ones? Are artificial sweeteners a good way to lose weight? Do they cause cancer? Why nutrition labels for TicTacs list z ...  Show more

What is money laundering? Why can’t a criminal just spend good old fashioned cash? What are some of the ways used by criminals to launder money? Besides casinos, why are laundromats often mentioned? Why are countries like Panama and Cyprus ideal for laundering money? ... we expla ...  Show more

It's a beautiful night—the sky is clear, the stars are twinkling. You see a shooting star! Or is it a comet! Maybe a meteor? Whatever it is, it’s gone in an instant. But what if that whirring bit of space were headed... straight towards the Earth, not past it? Yeah, not so cute. ...  Show more

Why are missions like OSIRIS-REx bringing pieces of an asteroid back home? 

How did the planets form? How did life happen? Where did Earth’s water come from? To answer questions like these, scientists used to go big—looking at planets, dwarf planets, and moons—but now small is the new big. Technology is zooming in on the pint-size stuff—asteroids, comets ...  Show more

Following Nasa’s Dart mission, which successfully fired a spacecraft into the asteroid Dimorphos last month, Chris Lintott talks to Tom about what asteroids can tell us about the history of our planet, how scared we should be of them, and why you should be grateful if one hits yo ...  Show more