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Are you someone who thrives on making decisions at work, or do you prefer to take a back seat and let others have the final say? Decisions can be a source of anxiety, even for those who generally like making them. That's especially true when the sheer quantity of decisions to be ...  Show more

The UN’s COP26 summit is due to start this Sunday, and it’s pretty clear to most of us that climate change is the most serious threat to our health. Of course it’s a physical threat, especially to the vulnerable, due to extreme weather events like heatwaves, storms and fires, whi ...  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

Helium is full of contradictions. It’s the second most abundant element in the universe, but is relatively rare on Earth. It’s non-reactive, totally inert—yet the most valuable helium isotope is sourced from thermonuclear warheads. And even though we treat it as a disposable gas, ...  Show more

Encore episode. Helium is the second-most common element in the cosmos, but it's far rarer on planet Earth. As part of our celebration of the periodic table's 150th birthday, correspondent Geoff Brumfiel shares a brief history of helium's ascent, to become a crucial part of rocke ...  Show more

Helium is the only truly non-renewable resource, and it's essential for things like MRI machines and nuclear reactors, but should we be worried? And, we turn air into food, so why can’t we get carbon to leave the atmosphere – or helium to stay? In this episode, Cosmos Science Jou ...  Show more