The Prepeat ink-free printer, as spotted by Coventry University, was demonstrated in 2010. It offers reusable plastic sheets that apply to the paper using heat. No ink, no toner, no nothing. The user can reprint a document 1,000 times. Unfortunately, with a four-figure price tag and no sign of mass market availability, it seems the Prepeat could never quite generate enough heat.
Black and white e-ink screens have found a successful niche as a way to read books without straining the user's eyes. Amazon CEO Jeff Bezos declared in 2009 that a Kindle with a color e-ink screen was "multiple years away." Over a decade later, the color e-ink screen remains obscure.
Unlike nuclear fission that splits atoms apart, nuclear fusion is about smashing them together to ultimately generate electricity. It could mean minimal waste, zero-emissions energy at a time when carbon emissions are wrecking the planet. The Guardian billed it in 2014 as a technology that "has been ‘30 years away’ for several decades."
When Microsoft first demonstrated the Kinect in 2009 under its codename "Natal," it featured a flashy demonstration from famed video game designer Peter Molyneux – a figure who has a reputation for outlandish promises. Perhaps little surprise then that "Project Milo," a fully hands-free game where players could chat and interact with a video game character with no controller, never quite came to fruition.