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Spinning a hard-boiled egg on a tabletop could help unlock the mysteries of the Earth's weather, according to a mathematician at the University of Portsmouth. Andrew Burbanks, who has been invited to take part in Asia's biggest science fair this month, is part of a team of mathematicians who use ordinary objects, including toys, to help explain the maths behind important scientific problems. An exhibition the team calls The Dynamics of Spin has won them fans on YouTube, and they have been invited to exhibit at TechFest, India's international science and technology festival, which is being held this week in Mumbai.