A young boy walks past the turbines at Muppandal wind farm, Tamil Nadu, India. Muppandal is one of the largest wind farms in Asia.

Nomadic Penan leader Along Sega and his grandchild examine a tree stump near their village in the Sungai Nyakit area of the Sarawak rainforest in Malaysia.Their homeland is undergoing one of the highest rates of logging on earth.

This worker on the Juliana-Jaramillo Banana Producers' Co-operative in the Dominican Republic benefits from the membership of a Fairtrade organisation. This guarantees farmers a minimum wage throughout the year.

This satellite image shows the termini of several glaciers in the Himalayan mountains of Bhutan. The glaciers have been receding over the past few decades, and lakes have formed on the surfaces and near the termini of many of the glaciers.

This gray whale, Eschrichtius robustus, photographed north of Point Barrow in the Arctic, is one of 13 species of Great Whales.

Commentary

Brands that cry green

Apple, and other brands, including BP, Chevron and British Airways are all anxious to promote their green credentials. But says marketing expert, Elly Wooston, not all companies are as green as they would like us to believe.

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