In Alaska, Gordon Jacoby (above), Rosanne D’Arrigo, Greg Wiles, and Nicole Davi \used tree rings to date volcanic eruptions and earthquakes. The Lab was able to create a millennial-length record of climate change and volcanic eruptions there. These trees were killed by ash from Mount Churchill around 800 AD. Photo by Nicole Davi
Tags:
The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.