In "Secrets Beneath the Ice," join NOVA on a state-of-the-art expedition as researchers drill three-quarters of a mile into the Antarctic seafloor, recovering data that reveals the details of ancient Earth's climate and fauna.
In this episode, Charlie and Jordan talk about a new sensor that could help anesthesiologists better place needles for epidurals and other medical procedures. Researchers at the Massachusetts Institute of Technology designed and tested several types of optical sensors that could be placed at the tip of an epidural needle and determined that the best is one that relies on Raman spectroscopy.
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