After a private Technology Entertainment and Design (TED) conference, Google has launched Solve For X site, a kind of think tank project, which is designed to come up with radical solutions for huge problems.

Solve for X is a place where the curious can go to hear and discuss radical technology ideas for solving global problems, the website said. Radical in the sense that the solutions could help billions of people. Radical in the sense that the audaciousness of the proposals makes them sound like science fiction.

In another word, it's a forum for fostering discussion about hung problems, including climate change or cancer, according to a video posted on the site.

The search engine giant has always been interested in novel technology projects. As early as last November, the New York Times reported that Google was running a top-secret lab, which is making efforts to develop robots and even self-driven cars.

Richard DeVaul, Google's rapid evaluator, disclosed some details about the project in a Google+ post.

The conference is driven by short, technology rich presentations on topics ranging from low-energy, low-cost water desalinization to stretchable silicon biosensors, he wrote. This stuff is real.

DeVaul also said on Google+ that he works in a secret Google lab that may or may not be filled with roving robots, space elevators, and talking refrigerators.

It's not clear whether there is any relation between Solve For X and Google X, even though the two may have something in common.

Nonetheless, without doubt, both the secret lab and the Solve for X project will be a great strength for Google to restore its cutting-edge.

 Click the video to find out if Google revealed more details about Solve For X.