NASA launching laser satellite to study Earth’s changing ice

NASA is launching a laser-armed satellite next month that will measure -- in unprecedented detail -- changes in the heights of Earth's polar ice to understand what is causing ice sheets to melt fast. In recent years, contributions of melt from the ice sheets of Greenland and Antarctica alone have raised global sea level by more than a millimeter a year, accounting for approximately one-third of observed sea level rise, and the rate is increasing. More

(Source: The Hans India - Aug 27)