Smoking in cars that are carrying children has already been banned in some states of Canada, Australia and the US and the whole of South Africa.
Canada's Cancer Advisory Coalition claims the states' bans on smoking in cars have reduced children's exposure to second-hand smoke by 33%.
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Royal Navy vessels are following Russian warships 'every inch of the way' as they pass through the English Channel on their way to Syria.
Official figures show parents are increasingly defying government rules and taking their children on unauthorised trips during term-time.
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