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The 20th-century Austrian-British philosopher Karl Popper believed that any theory that was not ‘falsifiable’ – capable of being tested and proven incorrect – should be dismissed as unscientific. He was particularly critical of Marxist theory, which he believed was constantly being revised by its adherents to account for its failed predictions, and therefore could not possibly be scientific. The falsification principle is a cornerstone of the modern scientific method, but some contemporary scientists, cosmologists and philosophers believe it might need to be revised as they investigate concepts such as string theory and the multiverse, which come up against the limits of what is testable – at least for now.
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Neuroscience
This intricate map of a fruit fly brain could signal a revolution in neuroscience
2 minutes
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Information and communication
Coverage of the ‘balloon boy’ hoax forms a withering indictment of for-profit news
17 minutes
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Meaning and the good life
Wander through the English countryside with two teens trying to make sense of the world
10 minutes
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Computing and artificial intelligence
The ‘cloud’ requires heaps of energy to stay aloft. Could synthetic DNA be the answer?
12 minutes
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Biology
Brilliant dots of colour form exquisite patterns in this close-up of butterfly wings
3 minutes
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Genetics
Why it took a century to work out that humans interbred with Neanderthals
22 minutes
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Personality
A ‘dumpster archeologist’ reconstructs strangers’ stories via what they’ve discarded
14 minutes
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Evolution
How – and how not – to think about the role randomness plays in evolution
60 minutes
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Meaning and the good life
A Japanese religious community makes an unlikely home in the mountains of Colorado
9 minutes