The Willamette River in downtown Portland was just one of thousands of locations worldwide where the
climate awareness campaign known as "350 Day" took center stage on Saturday.
"
350 Day" is the product of a published report by NASA climatologist James Hansen, which concludes that 350 parts per million is the maximum safe level of carbon dioxide in the earth's atmosphere.
Portland's most visible event was connected to the
River of Action initiative and consisted of more than 100 to canoes and kayaks linking together on the Willamette River to form a giant "350" out on the water just south of the Burnside Bridge.
Some more photos from the event: