Here's a definition from Wiki:
Young Earth creationism (YEC) is a form of creationism holding that the Heavens, Earth, and all life were created by direct acts of God during a relatively short period, sometime between c. 5,700[1] and 10,000 years ago.[2] Its adherents are those Muslims, Christians and Jews[3] who believe that God created the Earth in six 24-hour days, taking the Hebrew text of Genesis as a literal account.[4][5] Some adherents believe that existing evidence in the natural world today supports a strict interpretation of scriptural creation as historical fact. Those adherents believe that the scientific evidence supporting evolution, geological uniformitarianism, or other theories which are contradictory to a literal interpretation of the creation of existence according to the Book of Genesis, are either flawed or misinterpreted.[6]
Note, that I'm not one of the Muslims who believe in this - and apparently there are Jews as well as Christians who do believe in this.
I wonder whether anyone here will be brave enough to admit to believing that Genesis is literally true and that the scientific evidence is 'either flawed or misinterpreted'.
Specifically, the Christian YECs believe:
Young Earth creationists interpret the text of Genesis in a strictly literal fashion. Therefore, they believe that God created the world in six normal-length days, and planted the Garden of Eden for the habitation of an original human couple (Adam and Eve). As a result of the subsequent Fall of Man, humanity was forced to work hard to provide food, childbirth became painful, and physical death entered the world. YECs believe that prior to the Fall all animals were herbivores.[40] (See Animal behavior below.)
The Genealogies of Genesis record the line of descent from Adam through Noah to Abraham. Young Earth creationists interpret these genealogies literally, including the old ages of the men. For example, Methuselah lived 969 years according to the genealogy. Differences of opinion exist regarding whether the genealogies should be taken as complete or abbreviated, hence the 6,000 to 10,000 year range usually quoted for the Earth's age.
http://en.wikipedia.org/wiki/Young_Earth_creationism
And these Churches have YEC as official policy:
Evangelical Reformed Presbyterian Church
Lutheran Church Missouri Synod
Protestant Reformed Churches in America
Seventh-Day Adventist Church
Cheers,
Shafique