Oh, you wouldn't like this...
LED lights have rose to fame as it's not just energy-efficient, it's cheaper as well. However, a new study shows how its bright rays are contributing to our environmental problems.
Switching to LED (light emitting diode) bulbs may sound like a good idea and while you may have the best intentions in using this, you might want to hear first what a global study of Christopher Kyba from the GFZ German Research Centre for Geoscience has to say.
To cut it short, it's worsening our light pollution. How?
Kyba's team looked into it using a radiometer especially designed for night lights. By mounting it to a NOAA satellite that orbited our planet for 4 years, they were able to see the increase of artificial light around the world. They found that generally, Earth's night radiance increased by 2 percent per year for the past four years! Moreover, developing countries have rapidly increased the amount of these artificial light which means a rising light pollution.
Other light pollution weren't even detected by the sensor as it can't evaluate any light 500 nanometers like (surprise, surprise) the blue light our very own LED bulbs emit. Our adoption to these bright LEDs has increased the amount of light from cities which is clearly a bad news.
Light pollution, specifically the blue light emitted by LED bulbs, have a wide range of disadvantages/consequences. For one, we wouldn't be able to enjoy the stars and gaze at it until it consumes us; and that's just the least of our problem. It can affect our biological clocks, not to mention mess up our vision at night. It also disrupts wildlife--their biological rhythms and nocturnal instincts--when bombarded. And while quite rare, it can even make spring arrive early!
However, this doesn't mean we should say goodbye to our dear LEDs. Researchers say well-designed LED lamps can be used as it can decrease wasted light bulbs emit; plus it wouldn't look and feel different to us at all. So, here's to saving energy while actually decreasing light sources!
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