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Fuel protests in Africa, glaciers on the Equator and birdsong in an office.
BBC World Service Online
Texas suffers its worst drought ever, plus conservative conservation and renewable layoffs
Stormy reaction to the EU's new carbon tax on planes, plus environmental loopholes.
The campaign to revive the Los Angeles river - from concrete stormdrain to natural habitat
A hundred years after Amundsen reached the South Pole, is there anywhere left to explore?