U.S. Energy Department to develop lithium recycling research center
Lithium-ion batteries are used widely in everything from laptop computers to cars, and demand for them is increasing rapidly as more electric vehicles hit the roads
China to crack down on diesel trucks, raise fuel standards
The government said it would 'significantly increase' the number of diesel trucks capable of meeting emission standards by 2020
French pair invent plastic-to-fuel recycler fit for African bush
Every year about 260 million tonnes of plastic is produced
Madrid restricts traffic in city centre to clean up air pollution
Madrid authorities hope to catch up with other European capital that are already imposing traffic restrictions to improve air quality
Pig out? Asia gets a taste of climate-friendly 'pork'
Can a vegan 'pork' chop bun win over the world's keenest pork consumers?
Colombia's island fishermen dive into battle to protect coral reefs
As climate change and growing tourism hurt coral, efforts to "garden" new coral - and save incomes - are paying off
As climate risks rise, scientists call for rules on solar engineering
Technologies to reflect some of the sun's rays away from Earth, as a way to cool future runaway climate change, are moving closer to becoming a reality
Electric cars cast growing shadow on profits
"What everyone needs to realise is that clean mobility is like organic food – it's more expensive"
Can new technologies help track resilience?
Measuring resilience isn't cheap or easy - but using mobile phones to reach people on the move can help with both problems