ANTARCTICA — An iceberg has just broken off from Antarctica and is the biggest to do so in decades — but it's not caused by climate change.<br /><br />USA Today reports that a huge iceberg broke off from the Amery Ice Shelf in Eastern Antarctica on September 26.<br /><br />The iceberg, named D-28, has an area of over 1,636 square kilometers — bigger than Greater London or Los Angeles.<br /><br />According to USA Today, scientists working with the Australian Arctic Division said they first discovered a rift in the early 2000s and have been observing it because they expected the ice to calve.<br /><br />They said the calving is part of the ice shelf's normal cycle and not due to atmospheric warming, which mostly affects Western Antarctica, and not the east where D-28 is. <br /><br />Since the ice shelf was already floating, the calving has no direct impact on sea levels. However, the loss of ice may influence melting under the remaining ice shelf.<br /><br />Maritime authorities will now be tracking the iceberg, according to CNN, for the potential hazard it poses to shipping.<br /><br />We don't want another Titanic do we?