Tag: light pollution

Bird immune systems reveal harshness of city life

They may peck greedily at feeding tables – and have it easier than country birds do in the warmer urban winters – but city birds, it turns out, are in turmoil on the inside. By Aisling Irwin Researchers have found that many internal defence mechanisms that are quiet in rural birds are much more active in those in cities. These biological pathways are pumping out extra antioxidants, immune system cells and detoxifiers – a sign that urban life is challenging their health. Globally, bird numbers are dropping. According to figures published by conservation organisation BirdLife International last year, 40% of bird species have

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Light pollution lures night-time pollinators away from plants

Populations of bees, bats, butterflies and other pollinators have been declining for decades due to habitat loss, disease, pesticides and climate change. Now, scientists have documented yet another threat to pollinators: night-time light pollution.

In a recent study in Nature, ecologists showed that plants growing near streetlights were pollinated far less often at night and produced fewer fruits than their unilluminated counterparts. In turn, this may compromise the efficiency of daytime pollinators in the same fields, the authors conclude.

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India is losing its night to light, at 3 times world average

Light pollution is an outcome of the excessive use of artificial light at night. This “loss of night”, as Christopher Kyba, 39, a Canadian-born physicist and the lead researcher of the study calls it, poses a significant health risk to humanity and is impinging on the habitat of nocturnal animals. India is losing its night more than three times faster than the global average. Between 2012 and 2016, the study period, India’s area exposed to light pollution grew by a third, Kyba told IndiaSpend in the course of a Skype interview.

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