[Berlin, June 25. Image via Getty]

Activists dressed as Wonder Merkel (L) and Super Obama (R) pose for photographers during a stunt by environmental group Avaaz (voice) in front of Berlin's Brandenburg Gate on June 25, 2009. The activists called on German Chancellor Angela Merkel and US President Barack Obama to renew their efforts to combat global warming during their upcoming talks in Washington. AFP PHOTO/ JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)