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Satellites see unknown sources of sulfur dioxide

New satellite data reveal that much more sulfur dioxide is reaching the atmosphere than previously thought, heightening concerns over the pollutant’s impacts on ecosystem health. In a new study published in Nature Geoscience, Canadian and U.S. researchers led by Chris McLinden, of Environment and Climate Change Canada, located substantial, and previously unknown, global sources of the gas.

04 Oct 2016

Comment: Why I am a geoscientist

Think about how many times you get asked about climate change, fracking, droughts, earthquakes, volcanoes — the list goes on. Why are you asked about these varied topics? Because you’re a geoscientist.

09 Oct 2015

Ancient Homo erectus engravings adorn seashell

Artistic expression has been called one of the hallmarks of modern Homo sapiens and Neanderthals, with the first known art forms dating to about 100,000 years ago. Now, the discovery of etchings on a mussel shell dated to between 540,000 and 430,000 years ago may mean the first artwork came from Homo erectus instead.

 
07 Apr 2015