Source: Curium does not exist in nature. It is a synthetic element and it is produced in nuclear reactors by bombarding plutonium with neutrons. Isotopes: Curium has 15 isotopes whose half-lives are known, with mass numbers 238 to 252. Curium has no naturally occurring isotopes.
2017 Rolls-Royce Ghost Series II. Everything in life is relative, and perhaps no car illustrates this point as effectively as the Rolls-Royce Ghost. While it's technically the entry-level Rolls-Royce model, the Ghost's $250,000 base price puts it in the stratosphere of the overall automotive market.
It was originally bought for Â£1,000 in 1912 (almost Â£93,000 in todayâs money) but has now gone under the hammer for Â£4,705,500, making it the most expensive Rolls-Royce ever sold at auction.