>> A crack that could create an iceberg the size of of Delaware is widening faster than expected, threatening to destabilize one of the largest ice shelves in the Antarctic. The giant fissure expanding due to a new crack reported this week that's an offshoot of the original, with some scientists suspecting global warming is to blame.
Reuters correspondent, Tom James.>> The region has been getting warmer. Overall the amount of ice that's down there has been declining over time. So what I heard was this fits into that trend.>> The Larsen C ice shelf as it's called is the fourth largest of its kind in Antarctica.
The new iceberg likely to break off this summer is projected to be the largest on record, more than 300,000 thousand times the size of the iceberg that sunk the Titanic.>> So scientists in 2015 when they were talking about the fact that this iceberg was likely gonna break off, what they pointed to was not so much a risk posed by the iceberg, but the fact that such a huge piece of ice breaking off from this ice shelf could actually destabilize the ice shelf itself.
And if it breaks up we could see more ice flowing more quickly into the ocean. Which, according to some of the scientist that I talked to, could raise sea levels very slightly. I don't think we're talking about a catastrophic rise in it by any stretch of imagination, but it is something to consider.
>> Once the iceberg has broken off, the remaining shelf would be reduced in size by 10%, turning one of the largest ice shelves into one of the smallest on record.