Chemicals from household products rival vehicles as a key source of urban air pollution.
An innovative scanning system is making it easier to find the hidden stories behind artworks.
Borneo has lost a "shocking" number of its great apes, according to a new survey of the island.
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Underwater Photographer of the Year competition
Elon Musk: The entrepreneur behind Tesla and the Falcon Heavy
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The Indian state leading in clean energy
How plant-based materials and better recycling could tackle waste pollution
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