Tag: Clean Air Act

  • Nation & World

    How Earth Day gave birth to environmental movement

    Denis Hayes remembers how he dropped out of Harvard Kennedy School in 1970 to help pull together a novel idea: a nationwide rally called Earth Day.

    15 minutes
    Denis Hayes on phone as associate holds posters advertising Environmental Teach-In in 1970.
  • Nation & World

    When is the price right?

    Cuicui Chen, who received her Ph.D. in Public Policy, says her research underscores the importance of drawing upon accurate beliefs when making market-based decisions.

    4 minutes
    Cui Cui Chen,
  • Nation & World

    ‘Warming hole’ delayed climate change

    Climate scientists at the Harvard School of Engineering and Applied Sciences (SEAS) have discovered that particulate pollution in the late 20th century created a “warming hole” over the eastern United States — that is, a cold patch where the effects of global warming were temporarily obscured.

    5 minutes
  • Nation & World

    America’s Eden that wasn’t

    A new history of science course on the environment moves past the fictions of an unspoiled earlier time of discovery and settlement.

    5 minutes
  • Nation & World

    The EPA at 40

    EPA Administrator Lisa Jackson said that strong Republican gains in November’s election do not mean there is a public mandate to roll back EPA protections.

    4 minutes