Science articles

Light pollution threatens Chile’s dark skies

It seems nothing can escape the inexorable spread of light pollution — not even the giant telescopes probing the heavens above northern Chile, a region whose pristine dark skies, long considered a paradise for astronomers, are under increasing threat.

Shellfish reefs: Australia’s untold environmental disaster

Virtually all of Australia’s shellfish reefs have disappeared, making them the country’s most threatened ocean ecosystem, scientists said Thursday, calling for more investment to rescue the important marine habitats.

1 in 9 people infected after gut surgery: study

More than 12 percent of people who have gastrointestinal surgery become infected within 30 days of going under the knife, researchers said Wednesday in a study covering 66 countries.

Water: Why the taps run dry

The world has abundant freshwater but it is unevenly distributed and under increasing pressure, UN agencies say, as highlighted by the severe shortages in Cape Town.
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