Many scientists, innovators and thinkers are creating different visions and ideas for our planet. They aim to develop models to best save a safe human space on our planet - not only for a minority but the majority.
The case for optimism on climate change
Al Gore asks three powerful questions about the man-made forces threatening to destroy our planet — and the solutions we're designing to combat them.
Energy from floating algae pods
Algae - an alternative source of energy? Jonathan Trent on his plan for "fuel without fossils" - to grow new biofuel by farming micro-algae in floating offshore pods that eat wastewater from cities.
Doughnut economics to create a safe human space on the planet
Kate Raworth on doughnut economics and the planetary boundary model in connection to social and human rights, The RSA, October 2012.
Rewilding - rebuilding broken ecosystems and economies
George Monbiot about the concept of 'rewilding', TED Talks, June 2013, Edinburgh