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All today's stories on newscientist.com, including: face-stealing robots, the latest Higgs revelations and how the zebra got its stripes

A strange feature of high-speed trading could be used to create an early-warning system of future 'flash crashes' in stocks

Despite having no new data, the world's largest particle smasher has released fresh analyses shedding some light on this most wanted of particles

Photographer Sharon Beals creates an intimate portrait of birds' nests from across the US

This year's experimental art fair features a giant, colour-shifting neuron, a menagerie of moving sculptures

Priceless lunar samples gifted after the Apollo landings fell into wrong hands – meet the moon-hunter who went undercover to get them back

Like something out of Fantastic Voyage, the torpedo is just 10 microns in length and designed to travel within the human body

Would you prefer to speed half way around the world in a matter of hours, or to zip about in a pilotless plane?

Watch the immune system's hitman zero in on a tumour cell in this dramatic close-up of the encounter

Previous studies overestimated the amount of ice being lost by mountain glaciers. But sea-level rise esimates are barely affected

The Happiness of Pursuit: What neuroscience can teach us about the good life by Shimon Edelman offers a happy addition to a classic recipe for well-being

An enigma that puzzled Darwin may have been solved – experiments suggest that zebras have stripes to fend off biting insects

In our latest expert guide, Derk-Jan Dijk and Raphaëlle Winsky-Sommerer explore the mystery of sleep and what modern life is doing to it

In the 1600s, the specimen of a curious long-necked seal emerged. It could explain tall stories of sea serpents – if only it hadn't been mislaid

A tasselled wobbegong shark has been photographed eating another shark for the first time

Half-moth, half machine, a new generation of remote-controlled insects could one day be used as spies

All today's stories on newscientist.com, including: US bat killer strikes in Europe and anonymous leaks emails from Syrian President's office

Our survey of UK forensic scientists reveals that many are concerned that closure of the Forensic Science Service will lead to miscarriages of justice

White nose syndrome has been reported in a single bat in the Czech Republic, but the case seems to be an exception in an area where most bats remain immune

Watch a nematode wiggle through a dense obstacle course in an experiment probing the mechanics of its motion