A strong message about climate change will travel across the world with tomorrow’s Live Earth show, one of the most powerful music events ever. Now local audiences have a chance to tune in to the spectacular shows, which are to take place across the globe, through giant screens that will be set up in Kotzia Square. Live Earth, a call for action against global warming, will signal the beginning of a long campaign headed by various international environmental organizations, including the Alliance for Climate Protection (the chair of which is former US Vice President Al Gore) and the Climate Group. The concerts, which will feature over 100 music artists, will take place in New York’s Giants’ Stadium, London’s Wembley Stadium, Sydney’s Aussie Stadium, Johannesburg’s Coca-Cola Dome, Tokyo’s Makuhari Messe, Shanghai’s Steps of the Oriental Pearl Tower and Hamburg’s HSH Nordbank Arena. Until late yesterday, it was unclear whether the big concert scheduled to take place on Rio’s Copacabana Beach, which would have featured shows by Lenny Kravitz and Macy Gray, among others, will go ahead, due to security fears. Some of music’s biggest names will participate: Bon Jovi, Alicia Keys, Keith Urban, Kelly Clarkson, Ludacris, Roger Waters, the Police, the Smashing Pumpkins and others will perform in New York. London will enjoy the likes of the Beastie Boys, the Black Eyed Peas, David Gray, Duran Duran, the Foo Fighters, Madonna, Metallica, Red Hot Chili Peppers, Keane, Genesis and James Blunt, among others. Crowded House and Toni Collette & the Finish Wolfmother have been scheduled to perform in Sydney and Tokyo will host Linkin Park, Rihanna, Michael Nyman and many others. Joss Stone and UB40 are included in the Johannesburg program, Chris Cornell, Enrique Iglesias, Snoop Dog, Shakira, Reamonn and others will play in Hamburg and the Shanghai lineup includes Sarah Brightman. The shows will be broadcast around the world via various means. Greek NGO Net Impact Hellas has arranged for the the so-called Athens Planet Impact event and as of 9 p.m. Athenians will be able to watch the shows free via a satellite connection.