NASA sticks a colossal ice block in NYC in new video

The greatest masses of ice on Earth, in Antarctica and Greenland, aren't just melting — this melt is accelerating.  How much ice are these critical polar regions losing into the oceans? NASA uses satellites to diligently measure the conditions of these colossal ice sheets. Between 2002 to 2017, the GRACE satellite observed 5,641 gigatonnes of ice loss. (For reference, a single gigatonne is equivalent to 1 billion metric tons — and there are about 2,200 pounds in a single metric ton.) "This is enough to cover Texas in a sheet of ice 26 feet high," said NASA.  To help visualize a single gigatonne, NASA made a new video, shown below in its shorter form (via Instagram) and longer form, which is only 24 seconds and definitely worth your time. As NASA notes, a gigatonne of ice in 843-acre Central Park would reach 1,119 feet high. Read more...More about Nasa, Antarctica, Sea Level Rise, Climate Change, and Greenland