North Pole sea-ice camp

Several scientists studying changes in the ocean, ice, and climate at the North Pole camped on the floating sea ice to prepare to cut a hole in a floe and install instruments measuring the heat passing from ocean to atmosphere.You can learn more in my new book on the once and future Arcitc, which is written for the whole family and follows my 3 recent Arctic reporting trips, including one to the North Pole. The first chapter of the book, The North Pole Was Here can be read online: www.nytimes.com/learning/globalwarming .