Wormholes

Misha Glenny and guests discuss an ancient civilisation who lived over 2000 years ago in the southwest of modern-day Libya. During prehistoric times, the Sahara Desert was greener and even had large lakes, but for the last 5000 years it has been a hyperarid environment. Extreme s ...  Show more

Misha Glenny and guests discuss one of the great writers on Central Europe after the first world war and on the dying of the old orders with the collapse of the Austro-Hungarian empire. As a German speaking Jew from Brody in the north-eastern edge of that Empire, which was then i ...  Show more

Melvyn Bragg and guests discuss the tantalising idea that there are shortcuts between distant galaxies, somewhere out there in the universe. The idea emerged in the context of Einstein's theories and the challenge has been not so much to prove their unlikely existence as to show ...  Show more

Black holes are one of the most beguiling objects in our universe. What are they exactly? How do they affect the universe? And what would it be like to fall into one? We venture beyond the point of no return with Yale astrophysicist Priyamvada Natarajan, into a fascinating world ...  Show more

Have black holes existed since the beginning of the Universe? Could we produce a black hole in the lab? Could we use gravitational waves to probe beyond the event horizon? It's a black hole Q&A as Izzie put your questions to Becky and Robert. Plus, author and broadcaster, Marcus ...  Show more

Nothing escapes a black hole … or does it? In the 1970s, the physicist Stephen Hawking described a subtle process by which black holes can “evaporate,” with some particles evading gravitational oblivion. That phenomenon, now dubbed Hawking radiation, seems at odds with general ...