Light pollution doesn't just reduce our view of the stars. It has been shown to affect human health and disrupt sleep patterns. It also affects the behaviour of some nocturnal animals, with one recent study linking it with local insect decline."It does not need to be this way," insists Dr Kyba. "There's a lot of room for improvement - if you light more carefully, you should be able to reduce skyglow, whilst still lighting the ground.

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