Earth sheds over 12 trillion tons of ice from polar caps in 47 years

UPDATE - follow-up to Satellites show Earth lost more than 12 trillion tons of ice from Greenland, Antarctica in 47 years - AP News: Satellite data reveals that Greenland and Antarctica together lost more than 12 trillion tons of ice over a span of 47 years. This massive loss comes to light through continuous space observations tracking polar ice sheets. Scientists use these satellite measurements to monitor how fast the planet's major ice reserves are shrinking over time.