The Solutions Project is an organization founded by engineering professor Mark Z. Jacobson (Stanford University), Marco Krapels, documentary filmmaker/activist Josh Fox and Mark Ruffalo, with the aim of moving The United States towards 100% renewable Energy, including the use of wind power and solar power. The organization says this Energy transition is mainly social and political in nature, not technical. In 2014, Ruffalo spoke out against Israel's Operation Protective Edge, Israel's 7-week war against Hamas, tweeting: "Israel destroys el-Wafa hospital as staff evacuates all patients". After receiving criticism for defending Palestinians, Ruffalo responded: "Sorry, I thought blowing up Hospitals was something that all human beings could agree was off limits." Finally, in response to accusations of anti-Semitism, Ruffalo responded, citing a Tikkun Daily article: "Empathizing w/ Gaza does NOT make me anti-Semitic, nor pro-Hamas or anti-Israel. It makes me human."