So Stephen Hawking is worried about aliens. The famous physicist recently suggested that we should be wary of contact with extraterrestrials, citing what happened to Native Americans when Europeans landed on their shores. Since any species that could visit us would be far beyond our own technological level, meeting them could be bad news.

Hawking was extrapolating the possible consequences of  a small but durable exercise known as SETI, the Search for Extraterrestrial Intelligence.

Seth Shost...

Researcher Tom Brooks reckons primitive man was a navigational genius. It's true, but only if you ignore the evidence to the contrary

Every now and then you have to salute a genius. Both the Daily Mail and the Metro report research analysing the positions of Britain's ancient sites, and the results are startling: primitive man had his own form of satnav.

Researcher Tom Brooks analysed 1,500 prehistoric monuments, and found them all to be on a grid of isosceles triangles, each pointing to the ...