Take a look at past ceremonies ... we pray for peace on Earth and goodwill to men." Obama lit the National Christmas Tree for the final time in his eight-year tenure as the nation's leader.

In 2006, Laura Bush was accompanied by the Botek family, whose farm in Pennsylvania won the National Christmas Tree Grand Championship. In 2011, Michelle, Sasha and Malia Obama took a look at ...

But what if the tree's branches are starting to droop, and the needles look a ... The National Institute of Standards and Technology ran tests that showed a dry Christmas tree that catches fire ...