Singer-songwriter Pharrell Williams and Former U.S. Vice President Al Gore joined forces to announce plans for a global concert to combat climate change.
Pharrell spoke on stage at the World Economic Forum in Davos about the initiative.
"I think you guys know how serious the global warming thing is and so, for us, we're taking it very seriously, and we wanted to do something very different this time. Instead of just having people perform, we literally - and I can't go all the way into it now because some interesting surprises are coming out soon - but we literally are going to have humanity harmonize all at once."
The aim is to generate a global audience of two billion people, in order to put pressure on leaders attending a major climate conference in Paris at the end of the year.
Gore ended the forum with a rallying cry in which he said green-energy initiatives were moving forward faster than anticipated.
The "Live Earth" event will be held in June, and is expected to take place across all seven continents.
