Canary in the coal mine – cherry blossoms

DC’s Cherry Blossoms as Climate Change Canary…As a native of the Washington area, the Cherry Blossoms are perhaps the quintessential universal symbol of nature’s beauty. In short, a November 11 published scientific study from University of Washington suggests that Washington, D.C., will have to move the Cherry Blossom up by nearly a month by 2050 or risk having blossom-less trees for the parade.
Huffington Post, 15 Mar 2012