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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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Of many mysteries surrounding the area known as the Bermuda Triangle, a recent emergence of a mile long sandbar, dubbed "Shelly Island" by a child collecting shells, has attracted much attention from the community nearby at North Carolina’s Hatteras Point. This type of land mass often appears only to be swept away again by the southbound Labrador Current whose cool waters cause unruly conditions when met by warmer waters of the Gulf Stream.
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