Additive manufacturing, more commonly known as 3-D printing, is inherently creative. Materials are layered together and built up, constructing an object from powder and heat and code. In the future, the U.S. Army wants to turn this innovation to far more destructive ends, by printing new warheads.
So DARPA wants a reusable spaceplane. I mean, who doesn't? For decades, space experts have tried to design quick-turnover, reusable launch systems. So far, however, no one has made one that works. "There really isn't any kind of vehicle today that does exactly what they're asking people to do," Micah Walter-Range, director of research and analysis at the Space Foundation, tells Popular Science. "You can certainly compare it to existing vehicles, but it seems to be a new class."
Following the downing of Malaysian Airlines flight MH17 over separatist-held eastern Ukraine, Russian state-owned media started focusing a lot on a strange little plane. The Sukhoi Su-25 "Frogfoot" is a jet fighter from the late Cold War, designed to support ground troops from closer overhead, and in the MH17 tragedy, what the Su-25 can and can't do is a centerpiece of Russian denials.
On Thursday, July 18th, Malaysian Airlines flight MH-17 was struck by a missile. The United States believes the missile was a Soviet-designed Buk, and American infrared satellites pinpoint the location of that missile's launch to territory in Eastern Ukraine held by Russian-backed separatists. Is it possible that, while Cold War technology launched the missile, and modern technology identified where it was launched, future laser technology could shoot missiles out of the sky?
You've seen what a nuclear winter looks like, as imagined by filmmakers and novelists. Now you can take a look at what scientists have to say. In a new study, a team of four U.S. atmospheric and environmental scientists modeled what would happen after a "limited, regional nuclear war." To inexpert ears, the consequences sound pretty subtle—two or three degrees of global cooling, a nine percent reduction in yearly rainfall. Still, such changes could be enough to trigger crop failures and famines. After all, these would be cooler temperatures than the Earth has seen in 1,000 years.
Last week in Hawaii, a squad of U.S. Marines brought a robot deep into the jungle. The Legged Support System (LS3) robot walks on four legs, carries 400 pounds, and shambles its way over rough terrain, like a mechanical mule in a future war. It’s all part of the Advanced Warfighting Experiment, and if the Marine Corps thinks the tests went well, future invasions may come with robotic horses doing some heavy lifting.