Revealed: The Origin Of The Titanic's Iceberg — forbes.com

The iceberg that sank the “unsinkable” RMS Titanic started its fateful journey with a period of unusually warm, wet weather four years earlier, say scientists. “That weakened the glaciers and made them more likely to calve in the year or two preceding 1912,” Professor Grant Bigg told Forbes. The finding, by a team at the University of Sheffield, overturns previous theories that high spring tides or a lack of sunspot activity caused an exceptional number of icebergs in the North Atlantic when the Royal Mail Ship set sail on its maiden voyage.

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