What was that circling the peak of Mt. Diablo Saturday?

Was it a case of an attack of the artist Christo?

No, it was a “necklace” of about 350 local high school students and others, holding up colored pieces of fabric in a chain to create a visual demonstration of concern about global warming.

The participants circled the peak of Mt. Diablo along the Mary Bowerman Trail. The event Saturday was just one of hundreds of such demonstrations taking place around the world, according to the folks at Save Mt. Diablo, who co-sponsored our local demonstration.

Cool photos, huh? They are by Scott Hein.

Three hundred fifty is the key number, and is the name given to this international day of action. According to Seth Adams of Save Mt. Diablo, the focus is on the number 350--as in parts per million, the level scientists have identified as the safe upper limit for CO2 in our atmosphere. But 350 is more than a number--it's a symbol of where we need to head as a planet. 
To tackle climate change we need to move quickly, and we need to act in unison--and 2009 will be an absolutely crucial year. This December, world leaders will meet in Copenhagen, Denmark to draft a new global treaty on cutting emissions.

Thanks, Seth and Scott, for sharing these wonderful photos.