A visitor stands next to a 3-D printed sculpture of a Triceratops dinosaur as it stands on display during the 3-D Print show at the Business Design Center in London, U.K., on Friday, Nov. 8, 2013. Popularity for 3-D printers has increased among engineers, designers and manufacturers as prices have fallen, making them affordable to more consumers. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
