Dear friends,

Imagine one of the largest banners the world has ever seen, staked down on a California glacier with a simple message: ?I?m Melting!?

Now imagine, at the same moment, activists in Ho Chi Minh City gathering along the Saigon River to mark the ever higher tides that are swamping homes and neighborhoods. Now imagine our friends in Hobart, Tasmania gathering along the beach to mark severe erosion from a recent series of freak storms.

Now, I need you to imagine a global movement, working together on one day to connect these dots -- each one a small bit of proof -- and show how climate change is a clear and present danger. On May 5, we?ll be holding a day of global witness that does just that. All around the planet, at spots where climate change is already cutting deep, people will be gathering to express their anger, and their hope that the world will find a better way. At every event, people will take a photo of a gigantic dot on a sign or banner -- each dot representing a local climate impact -- and we?ll connect up all the dots to issue a global clarion call for climate action.