Continental drift Permian era but failing to account for glaciation in India, Australia and South Africa. Geophysicist Jack Oliver is credited with providing seismologic evidence supporting plate tectonics which encompassed and superseded continental drift with the article "Seismology and the New Global Tectonics", published in 1968, using data collected from seismologic stations, including those he set up in the South Pacific. It is now known that there are two kinds of crust: continental crust and oceanic crust. Continental crust is inherently lighter and its composition is different from oceanic crust, but both kinds reside above a much deeper "plastic" mantle. Oceanic crust
Institute for the Study of Academic Racism as Raymond Cattell and Richard Lynn on what they considered to be nonscientific grounds. Whitney stated that Mehler combats those he accuses of racism primarily through popular rather than scientific channels (for example TV programs, such as "Geraldo"). Institute for the Study of Academic Racism The Institute for the Study of Academic Racism (ISAR) is an organization that monitors "changing intellectual trends in academic racism, biological determinism, and eugenics." ISAR states that in this capacity it "acts as a resource service for students, academics, journalists, legislators and civil rights activists." ISAR was founded by Barry Mehler in 1993. The institute