A white rhino and its baby cross a road on the drying shores of Lake Nakuru in Kenya's Rift Valley, 160km (99 miles) west of the capital Nairobi, December 18, 2009. World leaders worked through the early hours to try and beat a Friday deadline for a deal on cutting emissions and helping poor countries cope with the costly impact of global warming. REUTERS/Thomas Mukoya (KENYA - Tags: ENVIRONMENT SOCIETY ANIMALS)
REUTERS/Thomas Mukoya