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...researchers, led by Mary Schweitzer, set out to find using a cool set of chemical and histological (microstructural) tests. One of the great things about medullary bone is that it’s made of calcite, which preserves nicely in the fossil record, so makes it relatively easy to examine and use for sexual identification. As opposed to, say, a penis, which would rot away...

...the low molecular weight of the starting material. Possible exotherm limits section thickness to avoid degradation at centre. Air entrapment is a problem and, after pouring, mixtures are often subjected to vacuum to eliminate bubbles. Re-entrant angles are produced by flexible moulds, or by flexible mouldings. See Also: Melt casting, Slip-casting and Gravity die casting....

...centre stage. Archive footage appears courtesy of Footagevault. Titan The landing of the Huygens probe in 2005 unveiled the surface of Saturn's mysterious largest moon for the first time in history. Six years on, the data from the mission and its Cassini mother craft has revealed it to be a fascinating world of methane lakes, rainstorms and cryo-volcanoes. This film...

...researching granites in Eastern Bhutan can give clues about the evolution of the Himalayan mountain belt. ...[Stacy Phillips at Tangmachu beach, eastern Bhutan.] Stacy at Tangmachu beach, eastern Bhutan. Mountain belts represent areas of the earth’s crust that have been distorted by geological processes, been buried at depth and then brought back up to the surface....