Rhodium (Rh) is a silvery-white, hard and chemically inert transition metal and a member of the platinum group. Rhodium was discovered in 1803 by William Hyde Wollaston.

World wide there are less than 10 Rhodium producing mines which makes the metal a 100 times rarer than gold. These mines are not exactly Rhodium mines but rather the Rhodium is a byproduct of platinum or nickel mining.

Roughly 25 tons of rhodium are mined each year. For reference there are 2,350 tons of gold and 220 tons of platinum mined each year. Add to that the fact that Rhodium has many uses, including as a finish for jewelry, and you can undestand why Rhodium is the world’s most expensive metal.

Currently Rhodium sells for $2,750.00/ounce.

On August 23, 2005 Hurricane Katrina came to life and in her short existence, even though she was only the sixth strongest recorded Atlantic hurricane, she was the costliest hurricane, causing $81.2 billion USD before fizzling out on August 30, 2005.

Here are the rest of the top ten most expensive hurricanes in U.S. history:

• 2: Andrew -  1992 - $26.5 billion
• 3: Ike - 2008 - $29.6 billion
• 4: Wilma - 2005 - $20.6 billion 
• 5: Charley - 2004 - $18.6 billion
• 6: Ivan – 2004 – $18.1 billion
• 7: Agnes – 1972 – $15.23 billion 
• 8: Hugo – 1989 – $14.1 billion
• 9: Rita – 2005 – $10.5 billion
• 10:Frances – 2004 – $10.4 billion