Extras
Appraisal: 1909 Lella Grace Woodward Oil Painting
Uncover the secret world of New York and London’s resilient pigeon flocks.
Appraisal: Child's Cobalt-buttoned Shoes, ca. 1890
Appraisal: Staffordshire Child's Tea Service, ca. 1825
Appraisal: Renaissance-revival Style Crib & Bill, ca. 1892
Appraisal: Child’s Pieced & Appliquéd Quilt, ca. 1850
Appraisal: Yonezawa Toys Airplane, ca. 1950
Appraisal: Walking Popeye with Original Box, ca. 1935
Follow a female mountain lion in the Montana mountains over the course of a decade.
A mother mountain lion risks her life to feed her six kittens.
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Find out why deadly flash floods are on the rise and how we can protect ourselves from them.
Explore mysterious 9,000-year-old Stone Age megastructures found in the Arabian Desert.
Discover how two revolutionary ancient inventions changed the course of humanity forever.
Discover how Homo sapiens outlasted Neanderthals – and how they helped make us who we are today.
Follow Homo sapiens as they venture out of Africa and spread farther than any other human species.
Trace the remarkable origin story of Homo sapiens and the crucial moments that shaped our species.
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.
After centuries of pseudoscience, researchers examine the causes of racial health disparities.
Follow scientists in a quest to understand how complex forest ecosystems can help cool our planet.