Rio de Janeiro has become the first city to reach full compliance with the Compact of Mayors, a global coalition of city leaders dedicated to making their cities more resilient to climate change.
Water technology firm Ecolab has developed a new online tool that allows businesses to work out how water-scarcity will impact their revenue.
Barnsley residents are being invited to invest in a £10m solar rooftop community energy scheme - the largest of its kind in the UK.
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