Al Gore and Pharrell

Former US Vice President Al Gore speaks next to Pharrell William during a panel session on the first day of the 45th Annual Meeting of the World Economic Forum (WEF), in Davos, Switzerland on Jan. 21, 2015. 

EPA/LAURENT GILLIERON /LANDOV

Live Earth is returning June 18, 2015, with over 100 artists playing across seven continents to raise environmental awareness. Pharrell Williams is serving as creative director, helping co-founders Al Gore and Kevin Wall to choose who those artists will be.

The announcement came today (Sept. 21), as Pharrell joined the Live Earth leaders onstage at the World Economic Forum in Davos, Switzerland.

Is Pharrell performing? He wouldn't say, as none of the artists have been revealed yet and he chose to place emphasis on the mega concert's mission: urging world leaders to approve a new climate accord at Paris' United Nations Climate Change Conference, beginning Nov. 30, 2015.

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We do know the concerts will take place in New York, Paris, Johannesburg, South Africa, Sydney, Australia, Beijing, China, and Sao Paulo, Brazil. Each concert will last four to six hours. The Guardian also notes that a Live Earth 2015 concert will take place in Antarctica, potentially the second siginificant concert on the continent since Metallica accomplished the feat in 2013. 

Live Earth's first (and until now, only) running came in 2007, when artists like Kanye West, Madonna, the Police, and yes, Pharrell, played in stadiums all over the world.

The event was televised in over 130 countries and amassed a then-record eight million online viewers. According to the The Guardian, the event amassed over 19 million television viewers in the U.S. alone. Those who attended and viewed were urged to adopt a seven-point environmental pledge stressing limited carbon dioxide emissions and energy efficiency.