NASA space laser will measure Earth’s melting ice by satellite A NASA satellite orbiting Earth every 91 days will measure melting ice, possibly providing clues to climate change, officials say. The Ice, Cloud and land Elevation Satellite-2, or ICESat-2, will direct six lasers at sheets of ice and glaciers in the Arctic and Antarctica to gather data on how they are changing. The smart-car-sized laser tool, known as the Advanced Topographic Laser...