On Saturday, as U.N. climate negotiations plodded toward a finish, Friends of the Earth International staged a geolocation action. Its activists spread out to key points across Paris and transmitted their locations via GPS to spell out “Climate Justice” and “Peace.”

The day before, Greenpeace used “eco-paint” to turn the streets around the iconic Arc de Triomphe into a giant sun. Message: Go solar, go renewable. Video from Mashable:

Greenpeace also dangled a special message for the French president off the Arc de Triomphe: “Mister Hollande, renew the energy.”

A Greenpeace activist hangs with a banner reading "Mister Hollande, renew energy" from the top of the Arc de Triomphe during a protest on the Champs Elysees avenue in Paris, France, December 11, 2015 as part of the World Climate Change Conference 2015 (COP21).

Reuters / Charles Platiau

A week earlier, activists spelled out exactly what they wanted from COP21: