The oceans’ last chance: ‘It has taken years of negotiations to set this up’

Wildlife in most of the lawless high seas faces an existential threat from fishing, shipping and the military. Next month, a landmark UN conference could finally bring hope

Organic food sales soar as shoppers put quality before price

Retailers say demand is at its highest for a decade with popularity spreading from fruit and vegetables to other groceries

Huge profits in store for firm that can make a great leap in battery technology

The problems of storing and carrying energy for our gadgets and homes are proving difficult to solve. But a breakthrough is sorely needed

Green really is the new black as Big Oil gets a taste for renewables

Shell, Total, Statoil, even Exxon – they’re all at it. But are the recent moves into solar and wind power lip service, fashion, or a real shift away from fossil fuels?