A look at eight majors and juniors exploring for gold worldwide including Gran Colombia Gold (TSX: GCM; US-OTC: TPRFF), Nexus Gold (TSXV: NXS; US-OTC: NXXGF), OceanaGold (TSX: OGC; US-OTC: OCANF), Yamana Gold (TSX: YRI; NYSE: AUY), and Barrick Gold (TSX: ABX; NYSE: GOLD).