Sinkhole urban areas due to water main breaks or sewer collapses when old pipes give way. They can also occur from the overpumping and extraction of groundwater and subsurface fluids. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created; the substantial weight of the new material can trigger a collapse of the roof of an existing void or cavity in the subsurface, resulting in development of a sinkhole. Sinkholes tend to occur in karst landscapes. Karst
A Little Piece of Ground A Little Piece of Ground A Little Piece of Ground is a young adult novel by Elizabeth Laird. The book is about a twelve-year-old boy and his family struggling under the oppression of occupation in Israel/Palestine. It was first published by Macmillan in 2003 and reprinted by Haymarket Books in 2006. In 2003 it was a nominee for the Carnegie Medal and in 2004 won the Hampshire Book Award. The story comes from Laird's experiences in Lebanon during the Lebanese Civil War. The book has attracted some controversy regarding its portrayal of Israel/Palestinian relations.The book was translated into Arabic and