Times of India: South Africa will pit its tourism minister Marthinus van Schalkwyk against Indian environment secretary Vijay Sharma for the key post of UN’s climate change chief. Sharma will face competition from van Schalkwyk as the UN seeks a replacement for Yvo de Boer, Executive Secretary of the United Nations Framework Convention on Climate Change. Van Schalkwyk’s nomination was approved by the South African government after President Jacob Zuma met with him at the weekend to emphasise …