May 20, 2009 3:06 pm Secrets to Living to 100 Years Old There is no exact formula to living to 100 but some centenarians have great tips for living well into your golden years. Join the fun as 35 Delaware County seniors born in 1909 celebrate their 100th birthdays. US & World Videos 2:03 Project HOME received a $1M donation from the Phillies Charities in honor of their 35th anniversary 2:02 New bathroom police sparking debate over student equality in the Pennridge School District 2:02 Jewish students at Penn are concerned about the pro-Palestinian encampment, plan to petition 1:48 Legendary Philly DJ Jimmy Bishop's family got back a piece of history with return of gold records 2:27 ‘It's about taking chances.' New SEPTA apprenticeship is helping train people in the welding trade