Waste heat recovery

Crematories produce a lot of waste heat. Is it sacrilegious to recycle that excess heat to warm a swimming pool, as is the plan in Redditch, England?

Waste-to-energy power plant, and ski slope? Architecture firm Bjarke Ingels Group (BIG) proposed the unusual idea for a competition to replace a power plant in Copenhagen -- and won.

'Waste heat' is a hot area of research as an alternative energy source. Providers say they can turn excess heat produced by machines in factories into clean electricity.

The University of Notre Dame at Indiana is projecting a savings of $100k in heating and cooling by putting its computer servers into their cactus conservatory, in a technique known as 'waste heat recovery.'