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Ancient Past: A New Meaning for Stonehenge?

British archaeologists said last week that Stonehenge, the prehistoric stone monument, appears to have served as a cemetery for as long as 500 years and may have been a burial site for a single important family, perhaps a royal dynasty.

In other news, researchers said a massive release of methane 635 million year ago may have caused a jump in temperature that triggered rapid melting of global glaciation on earth. The sudden burst of methane may have occurred when ice sheets that stretched all the way to the equator broke apart.

Scientists say a 380-million-year-old fossil fish with an embryo still attached to its umbilical cord has provided the oldest example of a live birth. The specimen was found in Australia. Until now, scientists thought creatures from that time period reproduced by laying eggs.

And speaking of fossils, New Jersey sediment known as glauconite has yielded some curious specimens of late. One in particular, of a sabertooth salmon, suggests that the dinosaur-era fish may have survived longer than anyone thought, based on the geologic record.

And, finally, divers reported finding the ruins of an ancient temple in the Nile River that was built in honor of the Egyptian fertility god Khnum. Because the river has shifted course over the centuries, archaeologists said they expect to make other such finds through underwater excavations.

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VIDEO: How Hair Ice Grows

In 2013, American Scientist featured an article on odd ice formations on plant stems, including these curling ribbons of ice. One of the types of ice discussed in the article was hair ice—long, thin strands of ice that grow under quite specific conditions. The only problem is that a new study shows the theory put forth at the time—that gas pressure pushes the water out—isn’t correct... (click the link above to read more).

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