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

Contact the show - [email protected]

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