July 8, 2010 12:46 am Investigation: Vacant Properties Endangering Woman's Home A dangerous tree and bad roof on two abandoned properties are risking the safety of one woman’s home and she says the city won’t do anything to help. US & World Videos 3:32 Biden on campus protests: ‘Order must prevail' 3:26 Mayor Parker addresses City Council to discuss the future of Philadelphia schools 2:04 Pro-Palestinian protests continue at University of Pennsylvania 1:42 Pro-Palestinian protesters set up camp at Penn 3:34 Clearer picture of the matchups ahead of November's election