When thinking of rich green landscapes—ones where an abundance of rain keeps everything growing and vibrant, supporting water-loving wildlife like crocodiles and hippopotamus—the Sahara is hardly the place that comes to mind. Yet 6000 years ago, this would have appropriately described what has become the dry, thirsty landscape of the Sahara we know today. The desert’s previous state of relative lushness has long been known by scientists and others.
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The rapid melting of Greenland glaciers is captured in the documentary “Chasing Ice.” The retreat of the ice edge from one year to the next sends more water into the sea. Now University of Washington atmospheric scientists have estimated that up to half of the recent warming in Greenland and surrounding areas may be due to climate variations that originate in the tropical Pacific and are not connected with the overall warming of the planet.
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Earth Day, April 22, marks a time for the world to celebrate and demonstrate support for a healthy environment. In appreciation for nature and its importance for our own health and well-being, people all over the world come together to plant trees, coordinate recycling drives, and share the most equitable and sustainable ways to steward our environment. From my point of view, at the College of the Environment, every day is Earth Day!
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