671,000 children were served by the foster care system in the United States in 2015. "After declining more than 20 percent between FY 2006 and FY 2012 to a low of 397,000, the number of children in foster care on the last day of the fiscal year increased to 428,000 in FY 2015, with a slightly higher percent change from 2014 to 2015 (3.3%) than observed from 2013 to 2014 (3.2%)." Since FY 2012, the number of children in foster care at the end of each FY has steadily increased.The median amount of time a child spent in foster care in the U.S. in 2015 was 13.5 months. That year, 74% of children spent less than two years in foster care, while 13% were in care for three or more years. Of the estimated 427,910 children in foster care on September 30, 2015: 43 percent were White, 24 percent were African-American, 21 percent were Hispanic (of any race), 10 percent were other races or multiracial, and 2 percent were unknown or unable to be determined.Children may enter foster care voluntarily or involuntarily. Voluntary placement may occur when a biological parent or lawful guardian is unable to care for a child. Involuntary placement occurs when a child is removed from their biological parent or lawful guardian due to the risk or actual occurrence of physical or psychological harm, or if the child has been orphaned. In the US, most children enter foster care due to neglect.
Tarka may refer to:

Tarka, also Chhaunk, in Indian cuisine is a method of seasoning food with spices heated in oil or ghee
Tarka, Nigeria, a Local Government Area in Benue State, Nigeria
Tarka, Niger
Tarka the Otter, a 1927 novel by Henry Williamson
Tarka Line, a railway line in Devon, England
Tarka Trail, a series of footpaths assembled from former railway lines
Tarka (medication), a brand name for an antihypertensive medication
Tarka (flute), also tharqa, a traditional flute of the Andes
David Tarka (born 1983), Australian football player
Taharqa, Nubian pharaoh of the twenty-fifth Dynasty of Egypt
Tarka (film), a 1988 Kannada language movie
Taarka, an Oregonian quartet
Tarka Cordell (1968–2008), British musician, writer and record producer
Wiesław Tarka (born 1964), Polish diplomat
The Tarka, an alien race in the video game Sword of the Stars

See also
Tarka sastra, an Indian science of dialectics, logic and reasoning