Researchers at Newcastle University have found ways to lesson the impact of bombings on trains. The 7/7 London bombings in which 52 passengers died and the Madrid bombing in 2004, where 191 people were killed, show how terrorists can target the rail network with deadly affect.
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Emma brings you Saturday's forecast
Longest spell of winter so far. Bitterly cold with further wintry showers
A look ahead at a wintry weekend forecast.