Candles shaping the initial letters of World Wildlife Fund are lighted during Earth Hour at the Atomium in Brussels, capital of Belgium, in this March 28, 2009 file photo. The world's only remaining male northern white rhino has been battling with a life-threatening ailment. The 45-year-old giant land mammal, fondly named as Sudan, has been sheltered at the Ol Pejeta Conservancy in the northern Kenyan county of Laikipia, and has lately grappled with an infection on his right hind leg, undermining his capacity to roam around and forage. "There has been no significant improvement on the health of Sudan and doctors are on the standby to administer treatment twice a day," said Elodie Sampere, communications manager at Ol Pejeta Conservancy, during an interview with Xinhua. (Xinhua/Wu Wei)
