This episode explores how one person's waste can be another's treasure. We talk to scientists trying to eke something useful out of big piles of rubbish and discuss making the economy more circular.

Anthill 11: waste not, want not

The Anthill is a show for curious minds, with a mix of everything from science, history and psychology to politics and economics. In each of our series, we unearth new stories from the world of academia, bringing you new and cutting edge research on the big issues of the day. Our latest series, out on November 16 2022, is Uncharted Brain: decoding dementia, which explores new research unlocking clues to the ongoing mystery of how dementia works in the brain. The Anthill is produced by The Conversation, a not-for-profit media organisation.  Hosted on Acast. See acast.com/privacy for more information.

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The quest for a theory of everything – explaining all the forces and particles in the universe – is arguably the holy grail of physics. While each of our main theories of physics works extraordinarily well, they also clash with each other. But do we really need a theory of everything? And are we anywhere near achieving one?
Featuring Vlatko Vedral, a professor of physics at the University of Oxford and Chanda Prescod-Weinstein, an assistant professor in physics and astronomy and core faculty in women's and gender studies at the University Of New Hampshire.
This episode is presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.
Further reading:  
The standard model of particle physics may be broken – an expert explains
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Theory of everything: do we really need one?

What’s the difference between a living collection of matter, such as a tortoise, and an inanimate lump of it, such as a rock? They are, after all, both just made up of non-living atoms. The truth is, we don’t really know yet. Life seems to just somehow emerge from non-living parts.
Featuring Jim Al-Khalili, professor of physics at the University of Surrey, and Sara Imari Walker, professor of physics at Arizona State University.
This episode is presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.
Further reading: 
Life: modern physics can’t explain it – but our new theory, which says time is fundamental, might

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Will we ever have a fundamental theory of life and consciousness?

It is hard to shake the intuition that there's a real and objective physical world out there. If I see an umbrella on top of a shelf, I assume you do too. And if I don't look at the umbrella, I expect it to remain there as long as nobody steals it. But the theory of quantum mechanics, which governs the micro-world of atoms and particles, threatens this commonsense view.
Featuring Chiara Marletto, Research Fellow of Physics, and Christopher Timpson, Professor of Philosophy of Physics, both at the University of Oxford, and Marcus Huber, Professor of Physics, TU Wien.
This episode is presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.
Further reading: 'QBism': quantum mechanics is not an objective description of reality – it reveals a world of genuine free will Hosted on Acast. See acast.com/privacy for more information.

Quantum mechanics: does objective reality exist?

Interest in the multiverse theory, suggesting that our universe is just one of many, has spiked since the movie Everything Everywhere All At Once was released. The film follows Evelyn Wang on her journey to connect with versions of herself in parallel universes to stop the destruction of the multiverse. The multiverse idea has long been an inspiration for science fiction writers. But does it have any basis in science? And if so, is it a concept we could ever test experimentally? 
Featuring Andrew Pontzen, professor of Cosmology at University College London, Katie Mack, Hawking chair in cosmology and science communication at the Perimeter Institute for Theoretical Physics, and Sabine Hossenfelder, research fellow of physics at the Frankfurt Institute for Advanced Studies. 
This episode is presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.
Further reading: The multiverse: how we're tackling the challenges facing the theoryCurious Kids: how likely is it that there are parallel universes and other Earths?The multiverse: our universe is suspiciously unlikely to exist – unless it is one of many Hosted on Acast. See acast.com/privacy for more information.

Is there a multiverse?

Imagine a universe with extremely strong gravity. Stars would be able to form from very little material. They would be smaller than in our universe and live for a much shorter amount of time. But could life evolve there? It after all took human life billions of years to evolve on Earth under the pleasantly warm rays from the Sun. 
Now imagine a universe with extremely weak gravity. Its matter would struggle to clump together to form stars, planets and – ultimately – living beings. It seems we are pretty lucky to have gravity that is just right for life in our universe.
Featuring Fred Adams, professor of physics, University of Michigan, and Paul Davies, professor of physics, Arizona State University.
This episode was presented by Miriam Frankel and produced by Hannah Fisher. Executive producers are Jo Adetunji and Gemma Ware. Social media and platform production by Alice Mason, sound design by Eloise Stevens and music by Neeta Sarl. A transcript is available here. Sign up here for a free daily newsletter from The Conversation.
Further reading: The multiverse is suspiciously unlikely to exist unless it is one of many
 Hosted on Acast. See acast.com/privacy for more information.

Anthill 11: waste not, want not

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