Telegraph: A climate "fix" to curb global warming would have a serious side effect, damaging the Earth’s protective ozone shield. Scientists have put forward several proposals to reduce the amount of sunlight that reaches the planet’s surface, including the use of light-reflecting sulphate particles in the atmosphere and putting mirrors in orbit around the planet. But there have been warnings that using these radical "geoengineering" techniques to cool our overheated planet could well …