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A new study published in the journal Nature has illustrated that the global rise in sea levels is worse than originally anticipated, and the rate of increase is accelerating. Between 1993 and 2014, the rate of increase jumped by 50 percent, with the average rise in 1993 being 2.2 millimeters (0.87 inches), and 2014 showing a rise of 3.3 millimeters (0.13 inches). This study follows an earlier paper that found that sea level increases are now nearly triple that of their pre-1990 levels.
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Amongst the myriad secrets lost to the ancient world was the formula for Roman concrete: uncannily more robust than today’s mixtures, there are ancient Roman seawalls and harbor piers, built two millennia ago, that are still standing today, whereas modern concrete would require maintenance every few decades under the same aquatic conditions. But now, a new study may have uncovered how the ancients made their long-lasting concrete, suggesting that the secret of this forgotten formula may not truly be set in stone.
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A $17 million expedition aimed at studying the effects of climate change in Canada’s Hudson Bay has been postponed due to complications brought about by climate change itself. An unusually heavy southward flow of surface ice from the Arctic has blocked the safe passage of the Canadian Research Icebreaker CCGS Amundsen, on the first leg of her mission to ferry 40 scientists participating in the Hudson Bay System Study (BaySys).
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