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We've seen some very sophisticated 3D-printed objects recently, but never a tiny 3D-printed battery -- one that's as small as a grain of sand, no less.

A group of U.S. and Korean researchers has managed to print a lithium-ion microbattery that can fit on the head of a pin.

Although it weighs less than 100 micrograms, it can store as much power per gram as larger Li-ion batteries used in laptops or electric vehicles. It could even power tiny robots or medical devices. … Read more

MakerBot, one of the most well-known desktop 3D printing companies, has been acquired by Stratasys, the companies said Wednesday.

In a release, the companies said it was a stock-for-stock transaction worth about $403 million, based on Stratasys' stock price as of Wednesday. Stratasys will exchange 4.76 million shares of its stock for 100 percent of MakerBot's outstanding stock. By agreeing to be acquired, MakerBot becomes part of one of the leading industrial 3D printing companies. The deal also allows the publicly-traded Stratasys to compete more directly at the consumer level with 3D Systems and that company's Cube … Read more

Australia is known for its overly large bugs, like the up-to-20-inch Titan stick insect. But the country also has tiny insects, like the itsy-bitsy wheat wheevil. Researchers with Australia's national science agency, the Commonwealth Scientific and Industrial Research Organisation (CSIRO), are trying out a method of super-sizing insects through 3D printing.

Small, sometimes nearly microscopic, insects from the Australian National Insect Collection are run through a 3D-scanning system and then printed out at magnified sizes in titanium. Why would you want to do this other than to leave one on someone's seat as a prank? The bigger versions give scientists a better look at the insect's anatomy in order to learn more about their surface characteristics or determine gender. Plus, it's just plain cool.… Read more

We've been hearing about the possibility of 3D-printed, full-size houses for some time. We may even get our first one sometime this year, thanks to the efforts of a couple of different architectural firms. Now you can get an idea of what it would take to create your own home from 3D-printed blocks.

Real estate blog Movoto has created a "3D Print your House" calculator to give you the daunting numbers involved with using a 3D printer to make your abode. The numbers are based on the time and cost of materials of using a MakerBot Replicator 2 to print out plastic bricks.… Read more

In another step toward 3D printers finding a place in everyday businesses and homes, online retailer Amazon has dedicated a section of its site to selling 3D printers.

The site sells 3D printers from well-known manufacturers such as Makerbot, as well as others such as Cubify and fabbster, alongside 3D printer filament and spare parts.

Prices for machines range from the $1,099 JET/Open Source 3D printer Replicator G to $2,479 MakerBot Replicator 2 Desktop 3D printer.

The section marks another move toward mainstream adoption for 3D printing and follows office-supply chain Staples' decision to begin stocking 3D printers.… Read more

New York lawmakers are the latest to crackdown on 3D-printed guns.

Both a member of the New York city council and a state assemblywoman have introduced two different pieces of legislation that would either regulate or ban the manufacture of 3D-printed guns, according to New York Daily News.

The bill for New York City was introduced by Council Member Lewis Fidler on Wednesday. This bill aims to make it illegal for people to produce any part of a firearm using a 3D printer unless they are licensed gunsmiths. Also, each weapon must be registered with the police within a 72-hour … Read more

Android users now can print photos, documents, and other files directly to certain printers with Google's Cloud Print app.

Landing in Google Play on Wednesday, the app allows you to print from any compatible Android phone or tablet to any Google Cloud Print connected printer. You can also share photos and documents from the built-in Gallery and other Android apps to Cloud Print and check on the status of your print jobs.

You can see if your printer is compatible with Google's cloud printing through the Cloud Print Web site.

How many trees does it take to print out the entire Internet? Some environmentalists really, really don't want to find out.

They're protesting plans by artist Kenneth Goldsmith to print out the entire Internet in honor of programmer and Internet activist Aaron Swartz -- and then display the results in a giant rented art space in Mexico City.

"I didn't know him at all, but like millions of others, I was touched by his work and life," Goldsmith tells Crave of Swartz, who committed suicide early this year, at 26. Swartz had faced $4 million in fines and 50 years in prison for his alleged role in making MIT academic journal articles and Jstor, an archive of scientific journals and academic papers, public. … Read more