101 Passengers injured in the derailment near Washington of an Amtrak passenger train, a crash investigators say may have been caused by heat-induced railroad damage
118[degrees] Temperature of the rail before the accident
44 Percentage by which regular mammograms reduce breast-cancer deaths, according to a new, long-term study
7 Number of studies reviewed by Danish analysts last fall, leading them to claim there was no evidence mammograms are beneficial
$22 million Donations to Washington's National Zoo inspired by popular giant pandas Mei Xiang and Tian Tian
1,100 Giant pandas left worldwide
21 Percentage of Major League Baseball fans who think the...