SHARING IDEAS THAT DO GOOD

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Climate

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Seaweed farming to combat climate change
Seaweeds can grow very fast at rates more than 30 times those of land-based plants. Because they de-acidify seawater, making it easier for anything with a shell to grow, they are also the key to shellfish production. And by drawing CO2 out of the ocean waters (thereby allowing the oceans to absorb more CO2 from the atmosphere) they help fight climate change. https://theconversation.com/how-farming-giant-seaweed-can-feed-fish-and-fix-the-climate-81761
2 September 2017 by ideaspies03

Climate

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International collaboration in measuring climate change
Atmospheric readings from Cape Grim, Tasmania along with two stations in Hawaii and Alaska, are closely watched as they date back decades and closely track a range of pollutants from ozone-depleting chemicals to the various greenhouse gases resulting from burning fossil fuels and clearing forests. Sites in the northern hemisphere exceeded CO2 400 ppm from 2012 onwards. But as the region has greater seasonal variation, mostly because there is more terrestrial vegetation, CO2 concentrations dropped back below that mark each spring. Now Cape Grim, which offers some of the purest air in the world for measuring climate change, has passed CO2 400 ppm, and it will need a huge global effort to curb greenhouse gas emissions to push the level back down.
26 August 2017 by Lynn Wood

Climate

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co2 level becoming symbolic
Within the next couple of weeks a major climate change marker is likely to be passed in a remote part of north-western Tasmania called Cape Grim. It's the co2 monitoring site jointly run by CSIRO and the Bureau of Meteorology and researchers predict its baseline reading of 400 ppm (parts per million) of carbon dioxide in the atmosphere is likely to be exceeded. Cape Grim's readings are significant because they capture the most accurate reading of atmospheric conditions in the southern hemisphere and have records going back 40 years. While the fraction may seem small, it's 0.04% of the atmosphere and it's symbolic. By comparison, a similar level of alcohol is near the legal driving limit of less than 0.5% in Australia.  
26 August 2017 by Lynn Wood