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Hear Melody Sandells from the University of Reading's Department of Meteorology explain why snow colour matters. Tuesday 20th May, 7.30pm, Wallingford School Library, St George’s Road, 

Most of us think that snow is white, but – according to meteorologists – there is more to snow than meets the eye. Snow is a constantly evolving material and changes its form depending on the conditions around it. Crystal size and colour are linked and play a critical role in the quest to use satellites to predict melt-water supply for more than a billion people.

Dr Sandells is a research fellow at the National Centre for Earth Observation at the University of Reading and is interested in the physics and remote sensing of snow.

The meeting will be in Wallingford School Library, St George’s Road, Wallingford. OX10 8HH. Light refreshments are available. The support of local company Triaster, Wallingford School and the generosity of speakers ensures that each event is free to attend. Science Exchange, Wallingford, is a member of the Café Scientifique network.

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