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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Benedict Cumberbatch heads up a group of all-star actors who have shot short films in defence of the Act.
A modified version of the herpes virus has proved a major success in phase III clinical trials.
The WWF reports that these new species were all found in 2014 - but that human development is already threatening many of them.