• Calbuco’s eruption expanded ozone hole to record size

    A new study argues that eruption of the Chilean volcano Calbuco on April 22, 2015 stretched the Antarctic Ozone Hole, the thinnest portion of the ozone shell that shields Earth from harmful radiation, to a record size nearly as large as Africa. It did so by ejecting…

  • Thick cloud of Saharan dust moving over SE Europe

    A large amount of Saharan dust was swept up into a low pressure system over north Africa on February 21, 2017. Thick dust cloud has already reached Spain and Portugal and is now moving east, toward Italy, Malta and the Balkans. The event is expected to last into…

  • Polar Stratospheric Clouds form over Sweden

    Polar stratospheric clouds, reported on December 9, 2016, over the skies of Kiruna, Sweden, indicate the stratosphere above the Arctic Circle is getting very cold. Polar stratospheric clouds (PSCs) form from the icy particles in the lower stratosphere, in extremely…

  • Record early start of southern hemisphere NLC season

    The southern hemisphere noctilucent clouds (NLC) season has started early this year and tied with 2013 for the earliest southern hemisphere season on record. The 2016/17 southern hemisphere noctilucent clouds season started on November 17 and tied with 2013 for the…

  • 40 tons of cosmic dust enters Earth’s atmosphere every day

    New experiments, carried by the EU scientists, managed to estimate how much cosmic dust enters Earth's atmosphere for the first time. The dust particles impact our atmosphere causing a wide range of phenomena, and further research hopes to address them. Dust…

  • London’s 1952 killer fog mystery solved

    A new study finally revealed the exact cause of the 1952 killer fog which hovered over London for several days. The fog contained large amounts of pollutants which caused widespread breathing problems and killed thousands of city residents. The fog covered London…

  • Light pillars and Moon halo over Denmark

    Light pillars and halos are formed when the freezing cold atmospheric air is filled with tiny ice particles in suspension. When the wind is low and the sky is clear, you might observe strange beams coming from different sources of light. Ice particles reflect and…

  • Troposphere ozone pollution highest near the equator

    A new research, conducted by the University of North Carolina (UNC), shows the pollution emissions are increasing in the area close to the equator where they produce a much greater impact on the ozone formation. The air pollution across the globe has increased since…

  • Unseasonal dust storm sweeps through Phoenix

    An intense dust storm accompanied by heavy rainfall, strong winds and lightning swept through Phoenix, Arizona on Thursday, November 3, 2016. The storm spread over Phoenix during the late afternoon hours (local time), surprising the residents and causing traffic…

  • Hazardous smog wraps Delhi, the worst in last 17 years

    A thick layer of hazardous smog blanketed New Delhi, India four days ago and shows no sign of loosening the grip. On November 3, 2016, between 07:00 and 09:00 (local time), Palam Observatory reported the dense smog layer has dropped the visibility to only 50 m (164…