 
		The argument for switching off lights at night
Fabrice Coffrini/AFP/Getty ImagesThe light pollution produced by street lamps, advertising boards, flood lights and our homes is so bad that 80% of the world's population lives in the haze of a perpetual glow in the hours of darkness.It started like any other day for Stephen Maciejewski. He woke up at 04:30 and by 05:30 he was in downtown Philadelphia ready to start his patrol. Maciejewski – a volunteer with the conservation non-profit Audubon Pennsylvania – has walked the exact same route for years... Читать дальше...
