ByRyan Morris and Ryan Williams This story appears in the August 2019 issue of National Geographic magazine ... are partnering with climate researchers to create maps of urban heat islands ...

8 min read This story appears in the September 2013 issue of National Geographic magazine. The maps here show the world ... million cubic miles of ice on Earth, and some scientists say it would ...

Estimates of its temperature vary ... the interior of the Earth cannot be studied by drilling holes to take samples. Instead, scientists map the interior by watching how seismic waves from ...