Rio +20 Earth Summit

Malcolm Preston of PwC is getting tired of Sustainable Development Goal naysayers. Here's why.

UN General Secretary attempts to counter widespread criticism over the lack of ambition at last week's earth summit

Governments and businesses pledge £330bn during Rio +20 Earth Summit, including plans to eliminate deforestation from the retail supply chain

'Pathway for a sustainable future' declared, but Greenpeace says summit was failure of epic proportions

Vague, unambitious, disappointing, the Rio text has angered many, but businesses should not ignore an agreement that still holds out the prospect of green growth

Caroline Spelman and Andrew Mitchell outline how low carbon investment will create jobs and boost the economy

Nick Clegg tells Telegraph more ambitious agreement was blocked by developing countries

UN chief urges leaders to be more ambitious after concerns they will sign a pre-negotiated text but won't commit on key issues