The Mysteries Found Deep in Earth's Mantle, Rare Shark Fossil Found, and TDIH - First Female Medical Degree and the Birth of the Frisbee

Uncovering the mysteries deep within the Earth’s mantle, a nearly complete ancient shark fossil found in Peru, and on This Day in History, a double feature - the first woman to earn a medical degree in the United States and the birth of the frisbee.
A Lost World Beneath the Pacific Ocean? Mysterious Structures Discovered Deep Within Earth’s Mantle | SciTechDaily
Scientists discover 'sunken worlds' hidden deep within Earth's mantle that shouldn't be there | Live Science
Full-waveform inversion reveals diverse origins of lower mantle positive wave speed anomalies | Scientific Reports
Great white shark's 9-million-year-old ancestor found in Peru | Reuters
Nearly complete fossil of Great White Shark ancestor discovered | Interesting Engineering
Biography: Elizabeth Blackwell
Elizabeth Blackwell MD - Women in Medicine and Science at Upstate - Subject Guides at SUNY Upstate Medical University
Elizabeth Blackwell | Biography & Facts | Britannica
Elizabeth Blackwell - Life, Education & Accomplishments
Frisbee inventor dies at 90 | US news | The Guardian
Walter Fredrick Morrison dies at 90; father of the Frisbee - Los Angeles Times
Walter Morrison: The Inventor of the Frisbee - BiographyHub
Meet Walter Frederick Morrison: The Inventor of the Frisbee - HubPages

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