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Dismantling buildings piece by piece to preserve the reusable parts within keeps materials out of landfills and creates more jobs that demolition.

In two decades solar cells have spread worldwide. Now a sun-powered golden sandwich promises to make them at least 10 times more efficient.

Greenhouse gas emissions impose a social cost – in ecosystem damage, in climate extremes, in human health and wealth. The US faces big losses.

Summary for Policymakers of IPCC Special Report on Global Warming of 1.5ºC approved by governments

Carbon removal from the atmosphere cannot match reducing emissions of greenhouse gases as a way of slowing global warming, US analysts say.

Biofuels are no easy answer to climate change. Nor is storing captured carbon dioxide. The world’s great forests cut warming better than engineered solutions can.

The difference between catastrophic devastation and manageable recovery following a disastrous event often can be traced back to decisions made decades earlier.

The tropical forests could be at growing risk from climate change. And as they die, rising forest carbon emissions could threaten much of the Earth’s life.