Infrasonic waves from the meteor that broke up over Russia’s Ural mountains last week were the largest ever recorded by the CTBTO’s International Monitoring System. Infrasound is low frequency sound with a range of less than 10 Hz.
Philadelphia, PA, February 14, 2013 – The 18th century natural philosopher Jean-Baptiste Lamarck proposed that the necks of giraffes lengthened as a consequence of the cumulative effort, across generations, to reach leaves just out of their grasp. This view of evolution was largely abandoned with the advent of modern genetic theories to explain the transmission […]
For the first time scientists studying the cellular processes underlying the body’s response to healing have revealed how a flash of calcium is the very first step in repairing damaged tissue. The findings, published in Current Biology, could lead to new therapies that speed up the healing process following injury or surgery.
This part of the constellation of Sagittarius (The Archer) is one of the richest star fields in the whole sky — the Large Sagittarius Star Cloud. The huge number of stars that light up this region dramatically emphasise the blackness of dark clouds like Barnard 86, which appears at the centre of this new picture […]