Hurricane of rock A SWIRLING vortex of molten rock has been found 3000 kilometres beneath the North Pole. The Earth's magnetic field is thought to be generated by circulation in its molten outer core. By looking at historical measurements of the magnetic field, geophysicists Peter Olson and Jonathan Aurnou of Johns Hopkins University in Baltimore, Maryland, traced a … News
Humans Westminster diary BIOMASS—plant matter—is hugely important as an energy source these days, as the Royal Society and the Royal Academy of Engineering recognise in their joint report, Nuclear Energy—the Future Climate (www.raeng.org.uk/state/pubs/nuclearst.html). Biomass already supplies 14 per cent of the world's energy needs—mainly in developing countries. However, the report suggests that biomass could yet meet 5 per … Opinion
The last supper PLANETS are tiny, insignificant things compared with their parent stars—little more than moths fluttering around the stellar camp fire. You might think that they could have no discernible effect on their stars and, until recently, astronomers would have agreed with you. But it is becoming clear that when old stars grow huge enough to swallow … Features
Roots of history HUMAN life often seems a frenetic business, all booming population and burgeoning technology. Where, amid all this chaos, do we place plants? In some parts of the world, where most of the people must wrest their living from the soil, the importance of plants for food, clothing and shelter is still recognised as paramount. It's … Inside Science
The Last Word Whiz-bang Question : On Friday 13 August 1999, between 10 and 11 at night, I was in a campsite near the Ammersee in Bavaria when a bright orange-red glowing object passed overhead. Several people saw it. It was silent, bright enough to be seen after it went behind trees, and seemed to have a very … Regulars