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Scientists find evidence of shark bigger than Jaws at Mammoth Cave

Scientists said some of the most mysterious and frightening creatures in the oceans today were swimming all over Kentucky 350 million years ago.

“There was no cave here,” said paleontologist JP Hodnett. “It was just a big open marine ocean floor with lots of water over your head. Over time that filled up and then it became dry land.”

Learning that sharks lived in our backyards all started by chance at Mammoth Cave. Back in the 90s, guides started noticing shark teeth and other fossils. But no one had ever found any shark fossils from this layer until now.

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A trillion turns of light nets terahertz polarized bytes

U.S. and Italian engineers have demonstrated the first nanophotonic platform capable of manipulating polarized light 1 trillion times per second.

“Polarized light can be used to encode bits of information, and we’ve shown it’s possible to modulate such light at ,” said Rice University’s Alessandro Alabastri, co-corresponding author of a study published this week in Nature Photonics.

“This could potentially be used in wireless communications,” said Alabastri, an assistant professor of electrical and computer engineering in Rice’s Brown School of Engineering. “The higher the operating frequency of a signal, the faster it can transmit data. One terahertz equals 1,000 gigahertz, which is about 25 times higher than the operating frequencies of commercially available optical polarization switches.”

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