South Korea's stem cell scientist Hwang Woo-suk attends a news conference at the Seoul National University in Seoul December 16, 2005. Hwang, whose work is under intense scrutiny, said on Friday he had proof his team had made patient-tailored stem cells this year but the cells had later been badly contaminated. REUTERS/Kim Kyung-Hoon Pictures of the Month December 2005 Pictures of the Year 2005