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Cementing a greener future

Less energy-intensive ways of making concrete are being investigated, writes Lynley Donnelly

End the carbon spending spree

The world has already spent 40% of its allotted carbon budget since 1990 and has little more than half of what it is allowed to spend until 2100.

A carbon economy is not viable

The experts debate how to deal with carbon footprints and moral panic. Yazeed Kamaldien reports.

Oil at its outer limit

We're somewhere between the petroleum age and renewables, writes Kevin Davie.

Stone-age air conditioning

Property developer Basil Walker's rock store is a highly innovative and energy-efficient model for cooling systems in modern buildings.

Desertec: sustainable solution or a pipe dream

Deserts receive more energy in six hours than all the people in the world consume in an entire year.