An exotic type of symmetry - suggested by string theory and theories of high-energy particle physics, and also conjectured for electrons in solids under certain conditions - has been observed experimentally for the first time.
At the current growth rate the global population is predicted to reach 10 billion by 2050. To feed this many people, food production worldwide will need to double during a period when climate change will worsen, fossil fuels will dwindle, and water availability will become unpredictable.
We’d all like to think that a small tipple – a glass of wine or a pint of beer, say – is not going to be bad for us, particularly at this time of year. So how much more are we likely to pounce on reports that such moderate amounts of alcohol might actually have some beneficial effects, like lower risk of heart disease?
It emerged today that more drivers are using hand-held mobile phones than two years ago, despite the introduction of tougher penalties, BBC News online reports. The Transport Research Laboratory is worried because phone-using drivers are four times more likely to crash and their reaction times are likely to be slower.