A Field Museum scientist has developed a novel way to determine land elevation as continents moved around the Earth through geological ages. Knowing how high mountains and plateaus were in the past ...

NASA's Ice, Cloud and land Elevation Satellite (ICESat) has resumed measurements of the Earth's polar ice sheets, clouds, mountains and forests with the second of its three lasers.

More than 60% of the land most vulnerable to rising sea levels lies in the tropics, and hundreds of millions living in these areas will be at risk of flooding by 2100. The combination of sea-level ...