Christianity, Islam and Judaism symbols, three monotheistic religions, Jewish Star of David, Christian Cross and Muslim Crescent, Indonesia

The skeletal ruins of the A-Bomb Dome at dusk, Hypocenter, Hiroshima Peace Memorial, UNESCO, Hiroshima, Honshu, Japan

Broken Chair, Memorial to the Victims of Landmines, United Nations Office, Place des Nations, Geneva, Switzerland

Broken Chair, Memorial to the Victims of Landmines, Place des Nations, Geneva, Switzerland

Red Cross and Red Crescent flags, Geneva, Switzerland

The A-Bomb Dome, skeletal ruins of the former Hiroshima Prefectural Industrial Promotion Hall at Hypocenter, Hiroshima Peace Memorial, UNESCO World Heritage Site, Horoshima, Honshu, Japan, Asia

A woman in a mask holds onto a sign during a rally outside of a coal plant that was protesting against coal power and for raising awareness of global warming, on the international day of action promoted by 350.org, October 24, 2009, in Boulder, Colorado

A mass of people ride bicycles along Broadway in downtown Boulder, during a rally and demonstration against coal plants and to raise awareness of global warming, on the international day of action promoted by 350.org, October 24, 2009, in Boulder, Colorad