SMITHSONIAN MAGAZINE : THE ICEBERG THAT SUNK THE TITANIC The story article begins with an explanation of SNOWFLAKES and SNOW FALL... How ICEBERGS form... and how little was known about icebergs back when the Titanic collided with one that might have only lasted a few more weeks of cold ocean.
Excerpt: When the Titanic sank in 1912, it plunged an astounding two and a half miles and hit the seafloor at more than thirty miles per hour. The ship's ocean grave was so remote that its location remained a mystery until 1985, when a team that had the benefit of government-developed submarines and deep-water crafts was able to take some blurry snapshots. It took seventy-tree years, almost an entire human lifespan, to find the most illustrious and fascinating shipwreck of all time.