The seabed is not flat and smooth like the shimmering ocean above it. It’s a jagged, uneven landscape of submerged mountains and valleys, all hidden from sight – but not from science. By analysing the isotopic composition of the rocks that make up these underwater mountains networks – called mid-ocean ridges – scientists can identify […]

Blockchain technology has become synonymous with hype – exhibit A is Bitcoin, a digital currency that uses blockchain, and whose valuation has, in recent months, been pushed wildly up and down by waves of speculator exuberance and panic. But the technology, which promises to use a decentralised system of online records to do away with […]