Arctic Ozone Hole. The Ozone Layer The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 97-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on earth.
Nettie Stevens: Scientist Extraordinaire and STEM Icon; a Steampunk Feministâs Perspective Nettie Stevens If you want an example of the true grittiness and resourcefulness of the American spirit, you canât go past Nettie Stevens.
Hattie McClay. He met the next Mrs. Jack Johnson on August 8, 1907. Hattie McClay, whose real name was Anna Peterson, was a prostitute working in a call house in Manhattan. She quickly became Johnson's most frequent traveling companion, but soon learned that the world was not ready for a white Mrs. Jack Johnson..