logo
episode-header-image
May 2021
36m 48s

How old are the elements?

Bbc World Service
About this episode
tail spinning
Up next
Apr 24
Do animals hold funerals?
CrowdScience listeners Dougie and Molly have been wondering what happens to animals when they die, and whether there are animals that hold rituals to mark the passing of one of their kin. Presenter Caroline Steel is on the case, trying to work out what happens to the bodies of an ... Show More
26m 28s
Apr 17
Why does salt taste so good?
Salt can be found in almost every kitchen in the world. But how did this seemingly simple ingredient become the world's favourite flavour enhancer? This week, Crowdscience sets out to uncover why these tiny crystals have such a powerful effect on us. We explore the magic behind t ... Show More
26m 28s
Apr 10
When will the next super-volcano erupt?
Is the world sitting on a ticking time bomb? CrowdScience listener Christel recently watched a documentary about a volcanic eruption in 536 AD that left her native Sweden under a cloud of ash for three years. It got her thinking, do we know when this could happen again?With more ... Show More
29m 5s
Recommended Episodes
May 2000
Chemical Elements
Melvyn Bragg and guests discuss the chemical elements. The aim and challenge in chemistry, according to the Encyclopaedia Britannica, is the understanding of the complex materials which constitute everything in existence since the Big Bang, when the whole universe emerged out of ... Show More
28m 1s
Mar 2003
The Life of Stars
Melvyn Bragg and guests discuss the life cycle of stars. In his poem Bright Star John Keats wrote, "Bright Star, would I were steadfast as thou art". For Keats the stars were symbols of eternity- they were beautiful and ordered and unchanging - but modern astronomy tells a very d ... Show More
28m 19s
Jun 2020
Helium
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
26m 29s
Mar 2022
Comment calculer l'âge d'une étoile ?
tail spinning
1m 58s
Jan 2012
We Are Stardust
<p>The atoms in your heart once burned in the fires of a dead star. Does this constitute an almost-spiritual connection to the cosmos or is it mere chemistry? In this episode, Robert and Julie discuss the billion-year-old carbon inside us.</p><p> </p> Learn more about your ad-cho ... Show More
20m 39s
Dec 2021
The Big Bang: started from inflation, now we’re here
<p>For tens of thousands of years, humans have pondered eternal questions like “How does our world even exist?” and “Where did we come from?” Now, more than ever, scientists are finding answers within the Big Bang theory. About 13.8 billion years ago, in a fraction of a fraction ... Show More
33m 1s
Oct 2019
S1E2 - Episode #2 - Oxygen
This week Fergus, Carys and Joe discuss oxygen, the third most abundant element in the universe by mass. Listen to find out about oxygen bars, fire and the ozone layer! Plus a look at science "In The News", the return of "Science Fact or Science Fiction?" and a new game called "S ... Show More
28m 20s
Nov 2021
Fusion: Can we recreate the renewable power of stars down on Earth?
<p>The process that powers our sun was still a mystery about 100 years ago. Bit by bit, scientists have worked out that the fusion of hydrogen at a star’s core can generate enough power to keep it shining for billions of years. Now, armed with this knowledge, researchers around t ... Show More
27m 2s
Jul 2022
The mysterious particles of physics, part 1
The machine that discovered the Higgs Boson 10 years ago is about to restart after a massive upgrade, to dig deeper into the heart of matter and the nature of the Universe.Roland Pease returns to CERN’s 27-kilometre Large Hadron Collider (LHC) dug deeper under the Swiss-French bo ... Show More
30m 11s
May 2010
A Star is Born
<p>Like most things in the universe, stars begin as particles floating around in massive clouds of dust and gas. But what forces these particles to coalesce and form a star? Tune in and learn more about the birth of stars in this podcast.</p><p> </p> Learn more about your ad-choi ... Show More
14m 31s