Mysterious 3600 year old 'Sky Calender' is first sky map
The Sky Disc was discovered in Germany in 1999. Experts believe the Nebra Sky Disc was a calculator to help Bronze Age people predict the best times for sowing and harvesting in spring and autumn from the Middle Bronze Age/1600 BC
Easy as pi: Astrophysicist solves riddle of Britain's most complex crop circle
June 2008-Complex: The formation is 150 metres in diameter.He said the crop pattern 'clearly shows' the first ten digits of pi, which - as many will remember from their schooldays - is used to calculate the area of a circle using the formula Pi r squared. Mr Reed said: 'I noticed a photo of the Barbury Castle pattern. It shows a coded image representing the first ten digits of Pi - the ratio of the circumference of a circle to the diameter.
So you know your chronological age, but what's your age on the inside? Professor Ulrik Wisloff director of the KG Jebsen Centre for Exercise in Medicine at Norwegian University of Science and Technology, and his team have developed an online calculator to help you figure out your personal fitness age. Try it here.