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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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In the music of the universe, one of the most important sounds to us here on Earth is the song the Sun sings: every system has a resonance, and especially large and energetic ones like the Sun produce sounds that rebound back and forth though its vast sphere. These sound waves can be studied to glean information about the interior workings of our spheres that we would otherwise not be able to access, and recent changes in the Sun’s music has researchers that pay attention to this tune concerned.
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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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