Associated Press International Sunday 8:17 PM GMT American doctor in Sudan awarded Aurora humanitarian prize YEREVAN, Armenia YEREVAN, Armenia (AP) - An American doctor who has spent years working in a fighting-ravaged region of Sudan has been awarded the $1.1-million Aurora Prize for exceptional humanitarianism. Dr. Tom Catena was presented the prize Sunday in Armenia's capital, Yerevan. The prize was established in remembrance of the Armenian survivors of a mass killing by Ottoman Turks. An estimated 1.5 million Armenians were killed in 1915-23 in what many historians regard as the first genocide of the 20th century, a claim that Turkey rejects. Catena, based in Sudan's Nuba Mountains, "is a role model to us all," said American actor George Clooney, co-chairman of the prize selection committee and a prominent advocate of recognizing the killings as genocide. The prize includes $100,000 for Catena and $1 million for him to donate to organizations of his choice. <span class="sewcqk7vkgct1nh"><br></span>