Nozipho Joyce Mxakato-Diseko, SA's delegate to a summit drawing up a global climate pact, says the proposed plan ignores the needs of poor countries.
The UN pushes for a deal that sets out a compromise between emerging and developed nations but some environmental groups lament its weakness.
The UN climate talks in Lima, Peru, head for weakened deals in Lima on limiting global warming as meetings continue for an extra day.
Indian national Kailash Satyarthi and Pakistan's Malala Yousafzai have won the 2014 Nobel Peace prize for advocating children's rights.
Scientists are struggling to explain a slowdown in climate change that defies a rise in global greenhouse gas emissions.
A big expansion of Antarctica's ice almost a million years ago may help scientists predict modern climate change, a study has shown.
A huge explosion has wrecked government buildings in Oslo, including the office of Norway's prime minister. Several people were injured in the blast.
Investments to create jobs in clean energies risk backfiring by curbing employment in other parts of the economy, a study has shown.
Birds falling out of the sky in the US and Sweden are freak examples of the kind of mass animal deaths that have unusual but not apocalyptic causes.
Almost 200 nations sought to break a deadlock between rich and poor on steps to fight global warming.