Programme to install 42,000 LED lights has slashed City's electricity bill and maintenance costs
The bright lights of Las Vegas have always ensured a steady flow of tourist dollars to the world's gambling capital. But by switching to energy efficient street lights the city is now raking in a $2m annual...
COP24: Paris Agreement 'stays on course' as Rulebook breakthroughs underline global commitment to climate action
Talks in Katowice overran by more than a day, as late rows over carbon market rules escalated, but final agreement paves way for a ramping up of global decarbonisation efforts
Scheduled end of COP24 sails past as countries tussle over details of Paris Agreement Rulebook
Negotiators expect talks to run into the weekend, but hopes for finished rule book remain high
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