urban mining noun [U]
UK /ˌɜː.bən ˈmaɪ.nɪŋ/ US /ˌɝː.bən ˈmaɪ.nɪŋ/
removing and recycling metal parts from objects such as batteries and electronic devices that have been thrown away

As well as requiring good collection and recycling systems, urban mining relies upon people handing over products they no longer use. British charity WRAP (the Waste and Resources Action Programme) recently estimated that as many as 125 million mobile phones are being hoarded in people’s drawers and cupboards in the UK alone.
[opendemocracy.net, 15 March 2022]

solar skin noun [C]
UK /ˌsəʊ.lə ˈskɪn/ US /ˌsoʊ.lɚ ˈskɪn/
a number of very thin solar panels that completely cover the outside of a building

In West Melbourne, Australia, an eight-story building will be the country’s first office tower with a “solar skin,” marking a watershed moment for the construction industry. The $40-million office tower will be outfitted with 1,182 solar panels the thickness of a regular glass facade. And when complete, the array will provide enough power to meet practically all of the building’s energy needs, with almost no ongoing power costs.
[interestingengineering.com, 6 June 2022]

peecycling noun [U]
/ˌpiːˈsaɪ.klɪŋ/
using human urine as a fertilizer for plants

Peecycling—aka recycling human urine—gives “liquid gold” an entirely new meaning. But while the concept is making waves today, it’s nothing new. Urine has been used as fertilizer since 1867. Before making its way to the United States, it was considered a sustainable farming practice around the world in Finland, Sweden, and the Netherlands.
[brightly.eco, 21 June 2022]

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