Americans living in certain parts of the country know that such natural disasters can hit at any time, and some risk multiple types of natural disasters.
These are the cities with the most dangerous natural disasters.
The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating.
This restriction extends to animals that consume seafood in their diet.
Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.
This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock.
The US government claimed over 4 million barrels seeped into the Gulf, while BP put the figure significantly lower. Most of the oil has evaporated or dissolved, but up to 10 million gallons remain on the sea floor, and gobs of oil can still be found nestled into marshes along the coast.
Those homes account for 43% of the total single-family residential property in the United States.
That figure comes from a US federal judge who ruled on the matter.
Moisture contained in a buried carcass is not released to the atmosphere but is crystallized in place, in ice lenses around the mummy.
This process is more comparable to tightly wrapped food left too long in a freezer.
Preservation of the mammoth remains was somewhat different than has been imagined by the uninformed.
The mammoths were 'mummified', a process that is quite easily done in a cold environment.