Balloon manoeuvres

On 26th April 1986, Reactor 4 at the Chernobyl nuclear power plant in Ukraine exploded, releasing vast amounts of radiation. Now, 40 years later, it remains the worst nuclear accident in history. Using the Chernobyl anniversary as a starting point, this week the Unexpected Elemen ...  Show more

In 2025, Russian-born scientist Kseniia Petrova picked up some spliced frog embryos from a laboratory in France and brought them back to the USA to aid her research into ageing and cancer. She was detained by the United States Immigration and Customs Enforcement (ICE), charged wi ...  Show more

Andrea Sella, Professor of Inorganic Chemistry at University College London, celebrates the art and science of the chemical elements. Today he looks at helium. Helium is a finite resource here on Earth and many branches of science need it. Doctors need it to run MRI machines to d ...  Show more

Balloons are often filled with helium, which has a lifting force of one gram per meter. It's possible to assemble enough balloons to lift yourself from the ground -- but how many balloons does it take? Tune into this HowStuffWorks podcast to learn more.

In early February, 2023, the US shot down a Chinese balloon. The US says the balloon was gathering intelligence while the Chinese claimed it was a weather balloon. We look at the history of spy balloons and how they've evolved over time, as well as the dilemma these balloons put ...  Show more

Have you ever accidentally let go of a helium balloon and watched it float up … up … and away? It drifts way up in the sky until it’s just a tiny speck! But what would happen if a balloon made it all the way to outer space? We asked astrophysicist Amanda Farah to help us find the ...  Show more