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Mathematics without borders

The International Mathematical Union has celebrated its 100th anniversary with a conference entitled Mathematics without borders.
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New windows on the Universe

Find out what gravitational waves will tell us about the Universe: from understanding its birth to figuring out whether black holes have hairs.
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Going with the flow

By the 1970s physicists had successfully tamed three of the fundamental forces using a sophisticated construct called quantum field theory. The trouble was that the framework seemed to fall apart when you looked at very high or very low energy scales. So how could these be thought of as valid theories? It's a question physicists are still grappling with today.
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Strong but free

The early 1950s were an experimental gold mine for physicists, with new particles produced in accelerators almost every week. Yet the strong nuclear force that acted between them defied theoretical description, sending physicists on a long and arduous journey that culminated in several Nobel prizes and the exotic concept of "asymptotic freedom".
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fractal

Do infinities exist in nature?

Is the Universe finite or infinite? Is there infinity inside a black hole? Is space infinitely divisible or is there a shortest length? We talk to philosophers and physicists to find out.