1870's-1920's

By seahawks37

  • Lake Merrit, Cali

    Lake Merrit became the first official wildlife refuge.

  • Yellow Stone National Park

    Yellow Stone National Park
    Ulysis S.Grant made Yellow Stone a National Park

  • American Forestry Association

    American Forestry Association
    The American Forestry Accosiation merged with the American Forestry Congress.

  • Killer Fog

    Killer Fog
    In London 700 people were killed by the Killer Fog. The fog was created by a collection Sulfer dioxide and Combustion particles.

  • Killer Fog Again

    Killer Fog Again
    This time the Killer Fog kills 1000 people in London

  • Forest Reserve Act

    Forest Reserve Act
    President Benjamin Harrison passed the Forest Reserve Act, this allowed the President to set aside land for forest reserves.

  • Reclamation Act

    Promoted the irrigation and watering of the arid Wesfor farming

  • Svante Arrhenius

    Svante Arrhenius
    Swedish Chemist Svante Arrheius argued that increased emmisions from the burning of fossil fuels would lead to global warming.

  • Public Health Service Act

    Public Health Service Act allows the government to investigate the pollution of water.

  • National Park Service Act

    This created the the National Park Service and the Nationsl Park System