KEN LAVERY’S letter (HAS, May 17) indirectly referring to the unseasonable cold and wet weather caused by the obvious lack of sunshine raises an interesting point about Daylight Saving Time.

The system, first introduced in Britain on May 21, 1916, extended daylight hours during the summertime when the sun’s effect on temperature is greatest.

Global warming, particularly in the last century, must therefore be a consequence of the additional heat from the sun during this period.

Is it not about time that the Government thought seriously about increasing the length of our night times so reducing the amount of hours available for the sun to shine, which would have the immediate effect of cooling the world and extending the life expectancy of the planet?

The extra sleep we would all gain should lead us to worry less about the current situation.

B Jackson, Sacriston.