Would you bungee jump for the environment? 5 creative climate demonstrations

Organizers of the 350 Day of Climate Action are calling the over 5,000 rallies and protests in 181 countries "clearly the most widespread day of political action in the planet's history."

350 is the concentration of carbon dioxide in the atmosphere, measured in parts per million, that some leading scientists say represents a safe level for life as we know it on Earth. The level today stands at 387 ppm.

"Parts per million CO2 sounds too obscure an idea to attract crowds on six continents, but there were thousands of people in the streets from Togo and Ethiopia and Paraguay to Seattle and London and Sydney," said 350.org co-founder Bill McKibben.

Here are some of the highlights:

Table Mountain, Cape Town, South Africa

Climbers hung a giant 350 banner on the cliffs of Table Mountain, South Africa.

Israel, Palestine, Jordan

A 3, 5, and 0 on the Israeli, Palestinian, and Jordanian shores of the Dead Sea, highlighting the importance of coming across political boundaries to solve a common crisis.

Cebu, Philippines

As another typhoon bears down on the Philippines, students at Cebu made a giant 350 to call for action on climate change.

Johannesburg, South Africa

Bungee jump toward 350 from a retired coal plant in in Johannesburg South Africa.

Kunar Province, Afghanistan

The photo was taken in the remote Korengal Outpost in the Korengal Valley, Kunar Province, eastern Afghanistan. All the men are part of the 2nd Battalion, 12th Infantry Regiment, 4th Infantry Division based out of Fort Carson, Colorado. The vehicles in the background are no longer in use as the soldiers here walk everywhere when they go on key leader engagement with the local villages elders.

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Reprinted with permission of Hearst Communications, Inc