Hamidreza Mohamad Jafari

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How to Fix a Leaky Faucet

Don't ignore that leaking faucet in your kitchen or bathroom. All those wasted drops of water add up, and the solution can be simple for even an occasional DIYer.<p>Whether it's the cause of water pooling under your sink, or the annoying dripping sound that keeps you up at night, a leaky faucet is a …

Home Improvement

X-47B Completes a Carrier Takeoff

The Navy's prototype unmanned fighter succeeds in launching from the deck of the USS George H. W. Bush and flying in the complicated airspace around a carrier.<p><b>These robots grow up so fast</b>. It was just two years ago that personnel at Naval Air Station Patuxent River, Md. escorted PopMech through the …

Kepler Planet-Hunting Telescope in Peril

NASA says that the Kepler telescope has gone into safe mode, with another of its four reaction wheels jammed.<p>Kepler is down, NASA says. But it's not out just yet.<p>The prize planet-hunting telescope, which has discovered more than 2700 planet candidates and 130 confirmed new planets since it began …

Take a Look Inside a Tiny Nuclear Reactor

This year Westinghouse will begin fuel tests for its Small Modular Reactor (SMR), a downsized system that puts out 225 megawatts.<p><b>On the tail of getting the go-ahead</b> from the federal government to build the first new nuclear reactors in the U.S. in over 30 years, Westinghouse is aiming small. This …

The Audacious Science Happening Under the Sea

Around the world, scientific and industrial infrastructure is spreading beneath the waves. Here's a preview of some of the most audacious upcoming projects.<p>Around the world, scientific and industrial infrastructure is spreading beneath the waves. Here's a preview of some of the most audacious …

Cape Cod

Make Your Own Miniature Wind Turbine

Wind power is one of the fastest-growing energy sources in the world. With this quick project by Michael Arquin of the KidWind Project, young engineers can build a working turbine in just a couple of hours.<p>Wind power is one of the fastest-growing energy sources in the world. With this quick project …