00:00When massive icebergs break loose from places like Antarctica, it can send tons of ice floating elsewhere.
00:09And it's one of the most illustrative signs of global warming.
00:13Well, experts say one of these calving events has happened again.
00:16The third such event in just the last four years.
00:19The iceberg broke loose on May 20th, captured in this image by the Copernicus Sentinel-1 satellite.
00:24The giant iceberg has now been named A83, and you can see it breaking free, and it's utterly massive.
00:31Experts say this chunk of ice is around 147 square miles in area, or nearly seven times the size of Manhattan in New York.
00:39This, and other calving events like it, reveal a weakening of ice in Antarctica, caused by increasing temperatures at our poles.
00:46The effects of global warming tend to be more extreme in the coldest areas of the planet, with temperatures going up faster at the poles than anywhere else.
00:53Calving events like this are of particular import to climate scientists as well.
00:58When giant ice sheets break loose, they not only indicate warming oceans, but these sheets also melt faster as a result, raising sea levels and acidifying our planet's waters at a quicker rate.
01:08This also exposes a greater area of the ocean water to solar radiation, exacerbating the problem even further.
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