• 1
    faq
    Sex in the Middle Ages
    August 19, 2016 - Ruth Mazo Karras
    Historian Ruth Mazo Karras on church court records, means of contraception, and sex and gender roles in the Middle Ages
    180,673
  • 2
    faq
    Ant Wars
    August 25, 2016 - Sean O'Donnell
    Zoologist and entomologist Sean O'Donnell on Army Ants, chemical weapons, and invasive species
    99,992
  • 3
    WTFact
    Bioluminescent Algae
    September 2, 2016 - Maria Sinetova
    Biologist Maria Sinetova about a beautiful and sometimes dangerous phenomenon of glowing of dinoflagellates
    91,648
  • 4
    faq
    LSD: Mechanism of Action and Side Effects
    January 25, 2017 - David E. Nichols
    Pharmacologist David Nichols on the psychedelics, hallucinogen persisting perceptual disorder, and therapeutic effects of LSD
    71,491
  • 5
    videos
    Driver and Passenger Mutation in Cancer
    June 29, 2015 - Leonid Mirny
    Biophysicist Leonid Mirny on mutation balance, vulnerability of cancer, and its new explanatory paradigm
    65,553
  • 6
    faq
    Kuiper Belt
    August 9, 2016 - David Jewitt
    Astronomer David Jewitt on his discovery of the first Kuiper Belt object, origins of comets, and planetary migration
    62,155
  • 7
    faq
    Parties of the French Revolution
    October 26, 2016 - William Doyle
    Historian William Doyle on the political ideas in post-revolutionary France, historical views on the Terror and the origins of the ‘Liberty, Equality, Fraternity’ motto
    60,781
  • 8
    faq
    What Color Is the Sky on Mars?
    October 19, 2016 - Santiago Pérez-Hoyos
    Astrophysicist Santiago Pérez-Hoyos about the Mars' atmosphere, Pancam instrument, and Purkinje effect.
    60,328
  • 9
    faq
    Human Sacrifice in Aztec Culture
    October 13, 2016 - David L. Carrasco
    Historian David L. Carrasco on violent practices of the Aztecs, the purpose of human sacrifice, and the selection of the victim
    58,907
  • 10
    faq
    Marie Curie
    August 22, 2016 - Naomi Pasachoff
    Biographer and historian of science Naomi Pasachoff on the discovery of radium and polonium, acquaintance with Einstein, and Curie's double Nobel award
    54,614
  • 11
    videos
    Hot and Cold Cognition
    January 23, 2017 - Barbara Sahakian
    Neuropsychologist Barbara Sahakian on risky decision-making, two forms of cognition that people use, and the entrepreneurs' way of thinking
    54,236
  • 12
    videos
    Social Motivation
    September 15, 2017 - Antonia Hamilton
    Neuroscientist Antonia Hamilton on the practical use of the neuropsychological laboratory research, the difference between static and dynamic image perception, and how motivation can be measured
    50,388
  • 13
    videos
    Two Theories of Language Acquisition
    July 5, 2018 - Ben Ambridge
    Psychologist Ben Ambridge on the Chomskyan concept of the universal grammar, the constructivist approach to language acquisition, and grammatical similarities across different languages
    49,193
  • 14
    videos
    Cognitive Advantages of Bilingualism
    June 22, 2015 - Maria Polinsky
    Harvard Prof. Maria Polinsky on introducing two languages, the importance of literacy and advantages of bilingual individuals
    43,559
  • 15
    videos
    Behavioral Genetics
    January 26, 2017 - Robert Plomin
    Behavioral geneticist Robert Plomin on twin studies, genetic influence of parents on their children, and 1% of DNA that makes people different
    43,233
  • 16
    faq
    Feminism in the U.S.
    September 30, 2016 - Annelise Orleck
    Historian Annelise Orleck on gender inequality, the fight for equal rights, and "Jane Crow" laws
    41,895
  • 17
    faq
    What Is Time?
    August 30, 2016 - Mahdi Godazgar
    Physicist Mahdi Godazgar on the arrow of time, Schrödinger equation, and Einstein's relativity theory
    41,297
  • 18
    faq
    Alexander the Great
    August 25, 2016 - Ian Worthington
    Historian Ian Worthington on one of the most significant characters of the Ancient world, Macedonian drinking traditions, and sexuality in Antiquity
    41,025
  • 19
    videos
    Linguistic Theory of Question
    December 23, 2013 - Maria Polinsky
    Linguist Maria Polinsky on polar questions, strategy of asking in different languages, and cross-linguistic understanding of WH questions
    36,018
  • 20
    videos
    Retroviruses in Gene Therapy
    August 16, 2017 - Greg Towers
    Molecular biologist Greg Towers on the great scientific challenges, the dangers of gene therapy, and the way in which it can treat cancer
    35,170
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