https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/440636![Dartmouth College's Chris Polashenski cuts a block of ice from below a melt pond on sea ice in the Chukchi Sea on July 9…](https://images.rawpixel.com/image_social_portrait/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGQzNi0yLTIwMTAwNzA5MDAwM2hxXzEuanBn.jpg)
![Dartmouth College's Chris Polashenski cuts a block of ice from below a melt pond on sea ice in the Chukchi Sea on July 9…](https://images.rawpixel.com/image_social_portrait/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGQzNi0yLTIwMTAwNzA5MDAwM2hxXzEuanBn.jpg)
Dartmouth College's Chris Polashenski cuts a block of ice from below a melt pond on sea ice in the Chukchi Sea on July 9, 2010, for analysis upon return from the mission. Original from NASA. Digitally enhanced by rawpixel.
Dartmouth College's Chris Polashenski cuts a block of ice from below a melt pond on sea ice in the Chukchi Sea on July 9, 2010, for analysis upon return from the mission. Original from NASA. Digitally enhanced by rawpixel.
Public DomainFree CCO U.S. Government image for Personal and Business use