South Australia to get $1bn solar farm and world’s biggest battery

System will include 3.4m solar panels and 1.1m batteries, with operations set to begin by end of 2017

El Salvador makes history as first nation to impose blanket ban on metal mining

Campaigners celebrate victory for ‘water over gold’ after country unaninmously ushers through historic bill to end all forms of metal mining

Murder in Pondoland: how a proposed mine brought conflict to South Africa

The death of activist Sikhosiphi Rhadebe in the Eastern Cape has not stopped local communities opposing plans for a titanium mine that threatens important lands and a way of life, reports Yale Environment 360

Anti-fracking protesters take government to court in Lancashire

Activists will challenge permission granted to Cuadrilla for test fracking sites near Blackpool as pressure mounts over the cost of policing the protests

A Brittany eco-home with extra gîte and yurt – in pictures

A geobiologist has built this complex of buildings out of eco-friendly materials around a wooden main house, with scope for tourist rentals

UK offshore wind ‘will lower energy bills’ more than nuclear

RenewableUK chief says windfarms could offer cheaper prices than rates government agreed with new nuclear power stations

‘Extraordinary’ levels of pollutants found in 10km deep Mariana trench

Presence of manmade chemicals in most remote place on planet shows nowhere is safe from human impact, say scientists

Game of Thrones star in Greenland for Google Street View

GoT’s Jaime Lannister has shown little love for the far north, unlike the man who plays him, Danish actor Nikolaj Coster-Waldau, who has been collecting street view imagery for Google in southern Greenland to highlight the impact of climate change