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 Hosted on Acast. See acast.com/privacy for more information.

Physics professors Jim Al-Khalili and Sara Imari Walker discuss the emergence of life from non-living matter and the challenges of understanding consciousness. They explore concepts such as entropy, proton tunneling in DNA, quantum consciousness, and the role of information theory in understanding life. They also delve into the evolution of objects and theories like quantum biology and non-equilibrium physics that could unravel the mysteries 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.

The podcast explores the concept of the multiverse, discussing its origins, implications, and portrayal in science fiction. It examines experimental methods supporting the multiverse theory, including recreating bubble formation in a broader multiverse. The potential of creating simulated universes, cyclical universes, and their role in explaining phenomena like fine-tuning and the possibility of direct evidence for other universes is also discussed.

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.

Without a sense of time, leading us from cradle to grave, our lives would make little sense. But on the most fundamental level, physicists aren't sure whether the sort of time we experience exists at all. We talk to three experts and find out if time could potentially be moving backwards as well as forwards. Featuring Sean Carroll, Homewood professor of natural philosophy at Johns Hopkins University, Emily Adlam, postdoctoral associate of the philosophy of physics at Western University and Natalia Ares, Royal Society university research fellow at the University of Oxford.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: Quantum mechanics: how the future might influence the pastFour misconceptions about quantum physics Hosted on Acast. See acast.com/privacy for more information.

"There is nothing new to discover in physics", declared the British physicist Lord Kelvin in 1900. That is no longer true. Today it is becoming increasingly clear that there are problems that physics, as we know it, doesn't seem to be able to solve. Perhaps we just need more data, perhaps we need a new fundamental theory of reality. In this six-part series, host Miriam Frankel from The Conversation will take you on a mind-blowing journey from the smallest to the largest conundrums, exploring curled-up dimensions, consciousness and parallel universes along the way. We will discover the greatest mysteries facing physicists today – and discuss the radical proposals for solving them. The first episode will be available on March 8.  Great Mysteries of Physics is produced by Hannah Fisher with sound design by Eloise Stevens. You can sign up to The Conversation’s free daily email here.Great Mysteries of Physics is a podcast series supported by FQXi. Hosted on Acast. See acast.com/privacy for more information.