There are twelve Federal Reserve Districts in the United States. Number 1 is in Boston and covers the New England states, while number 12 is in San Francisco and covers the Western states, including Alaska and Hawaii. Source(s): http://www.federalreserve.gov/otherfrb.h... Sailinlove Â· 1 decade ago.
Layers in glaciers show a history much longer than 10,000 years, and radiometric dating places the formation of the Earth at 4.5 billion years. Light from galaxies is reaching us billions of years after it left, and the expansion rate of the universe dates its age to 13.7 billion years.
The age of the Earth is approximately 4.54 Â± 0.05 billion years. This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples. Following the development of radiometric age-dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old. The oldest such minerals analyzed to dateâsmall crystals of zircon ...