Tag: Heinrich Holland

  • Campus & Community

    Brighter model for global warming

    To environmental chemist Scot Martin, chemistry is a way of understanding the Earth and some of its most pressing problems. From global warming to heavy metal pollution in groundwater, Martin, named Gordon McKay Professor of Environmental Chemistry last July, is using the tools of chemistry to shed light on how natural processes interact with human…

    1–2 minutes
  • Campus & Community

    Researchers close in on date of critical rise in Earth’s oxygen

    Findings by Harvard researchers and colleagues narrow the range of possible dates for a critical change in the Earth’s atmosphere. Scientists had previously believed oxygen first appeared sometime between 2.45 billion and 2.22 billion years ago, a span of about 230 million years. The new findings narrow that window dramatically – to about 130 million…

    1–2 minutes