The Arctic and Antarctica are changing in ways that will impact the global climate, natural ecosystems, and human societies. This July, our
photographer Chris Linder and science writer Amy Nevala will join a team
of four scientists for three weeks of camping on the western edge of
Greenland to study how—and how fast—glacial ice is disappearing. Learn more about our mission and crew for Expedition 4 »
Explore the site: Follow daily dispatches from our past expeditions to learn about the day-to-day challenges of studying the world's coldest places
or explore the poles on your own.
Beneath Greenland's Glaciers: A look under the ice shows how meltwater forms and flows, and may possibly raise global sea levels. Watch the animation »
Videos and Interviews: Visit our multimedia section to watch interviews of the scientists and videos on our expeditions so far. Watch the videos »
If it’s not green, why call it Greenland? Despite its spring-like name, roughly 80 percent of Greenland is covered in ice. Read more »
Live talks: During Expedition 4, we will use a satellite phone to call museum auditoriums across the United States. See the schedule »
Compare the Poles: Even though they are both at the "ends of the earth," the Arctic and Antarctic differ in many ways. Learn more about the differences »
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