“I can honestly say it’s the best thing I’ve ever spent my money on,” says 30-year-old Stephen about the unassuming waist-high plastic pillar that sits in the bedroom of his converted bungalow in Nottinghamshire. The retail worker has always found the room uncomfortably hot in summer, and his attempts to cool down using freestanding fans, electric air coolers and reading up on rudimentary fluid dynamics never seemed to cut it.

How to stay cool without air con and help take some heat off the planet comes via ChinaTechNews.com.