2019
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瀹屽舰濉┖
涓撻缁冧範
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鍚嶅笀绮鹃�夊叏鍥界湡棰?/p>
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2019
涓�冪鏅幆淇濈被閫夌粌锛?/p>
In most situations, light helps us see
锛?/p>
But nowadays humans are using too much of it so that it is in
fact a kind of pollution
锛?/p>
When it comes to looking at the night sky, too much light makes it difficult for us to watch some of
life鈥檚 most wonderful sights: stars, planets and even galaxies
锛堟槦绯伙級
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According to scientific research, about 2, 500 stars can be seen by the human eye without using any
special equipment
锛堣澶囷級
锛?/p>
But because of light pollution, you can only see 200 to 300 stars from
today鈥檚 countryside, and no more than ten stars from a city
锛?/p>
In most big cities, people cannot see the
sky filled with stars like they did in their childhood
锛?/p>
Light pollution affects more than just our view of sky
锛?/p>
Research shows that lots of nighttime light
can harm wildlife, too
锛?/p>
When birds fly to another place over cities, they sometimes get lost by the brightness and fly in
circles
锛堝湀锛?/p>
until they drop from tiredness
锛?/p>
Sea turtles
锛堟捣榫燂級
need dark beaches for laying eggs,
but they can鈥檛 find their ideal places because of those bright lights
锛?/p>
Too much light at night may even affect human health, but scientists are not sure of that
锛?/p>
They are
still learning more
锛?/p>
In order to prevent things from going worse, governments and some organizations are working to
reduce light pollution
锛?/p>
Many cities and towns have taken action to reduce the use of lights at
night
锛?/p>
Lights are used only when and where they are truly needed
锛?/p>
They also shine lights down at the
ground instead of up into the sky and use lower brightness levels
锛?/p>
Hopefully, in the near future, humans can enjoy the clear and beautiful sky again and all the wildlife
will live a peaceful and undisturbed life, too
锛?/p>