Today on New Scientist

Earth's iron core isn't all that tough under pressure
Experiments on iron's behaviour at extreme pressure may help explain why seismic waves' speed through Earth's core is affected by their direction

World's largest events database could predict conflict
A database of over 200 million global events could help understand and forecast how conflicts will play out

Move to restrict asbestos trade blocked
Russia and six allies have blocked the move to require countries to develop policies on asbestos imports

Dark energy is still the greatest cosmic mystery
A new field, a new force, the power of our own ignorance? It's two-thirds of the cosmos but it just keeps us guessing, says Stephen Battersby

What does it mean to be posthuman?
Bioscience and medical technology are propelling us beyond the old human limits. Are Extremes and The Posthuman good guides to this frontier?

Fanning the flames: House burns in wildfire simulation
Many people think wildfires burn right up to the house and then burn the place down ? in fact, homes are destroyed by embers, as fires in a research chamber show

Nothing to see: The man who made a Majorana particle
Physicist Leo Kouwenhoven ended a 75-year hunt for the tricky Majorana fermion ? a particle that is its own antiparticle ? by creating one on a chip

Passenger plane flies 800 kilometres without a pilot
A plane has flown an 800-kilometre round trip in civilian airspace, controlled entirely from the ground, as the on-board pilot took it easy

Hints of lightweight dark matter get even stronger
A heap of new evidence from space telescopes and underground detectors could be pointing the way to the first solid sign of dark matter

Gliding robot mimics flying fish
A lightweight solar-powered robot could jump and glide its way across huge distances, making it ideal for applications such as aerial mapping

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