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The United States Postal Service has banned all international shipments of electronics with lithium batteries effective May 16. The cost for families to send gadgets via private parcel service to enlisted loved ones in some countries could almost quadruple. Starting on May 16, new United States Postal Service (USPS) regulations will prohibit iPads, Kindles, smartphones, and other electronics with lithium batteries from being mailed to overseas troops or foreign customers.

"Splashing" plays a central role in the transport of pollutants and the spread of diseases, but while the sight of a droplet striking and splashing off of a solid surface is a common experience, the actual physical ingredients and mechanisms involved in splashing aren't all that well understood.

A fusion reactor operates best when the hot plasma inside it consists only of fusion fuel (hydrogen's heavy isotopes, deuterium and tritium), much as a car runs best with a clean engine. But fusion fuel reactions at the heart of magnetic fusion reactors also create leftovers—helium "ash." The buildup of this helium ash and other impurities can cool the hot plasma and reduce fusion power

Groupon's Valuation May Shrink To $12 Billion . Groupon may have plans to cut back its IPO to about $500 million, a drop from its original intent in June to raise $750 million

What if your bike ride to work meant you got free stuff at stores? Recyclebank is going beyond just offering rewards for recycling, giving London commuters fresh incentives to walk or ride.

The AutoTram, which uses an innovative charging system to allow the most charges in the fastest amount of time, is a result of a series of experiments about the best way to power public transit. Is it a bus?

What's a concerned citizen to do? In an effort to reduce the amount of water the state imports, it's now producing an incredibly powerful greenhouse gas while it cleans its wastewater. Here’s a conundrum

Idling delivery trucks are a huge congestion causer in tight downtown areas. In Utrecht, they've eliminated the trucks and replaced them with a solar-powered golf-cart-sized delivery train. How do you sustain the commercial heart of a city without clogging its arteries?

The winning bid for the design of the Olympic village in Rio is based on the shape of tropical flowers, and is designed to be replaced with more needed buildings once the games are over. Whether or not countries benefit from the infrastructure they build to host the Olympics is a subject for heated debate, but build they still must

In this installment of the Butterfly Effect, climate change is creating incredible economic opportunity in the Arctic, leading to saber rattling from Canada and Russia.

Flying Paris to Tokyo in less time than it takes to watch two movies, with barely a wisp of exhaust?

Virgin America isn't waiting for major innovation in the biodiesel sector; they want to pay less for fuel now.

Biofuel-powered aircraft have finally been approved, and could cut airlines' fuel costs in half. When's the maiden flight? Biofuel-powered aircraft have finally moved into the real world now that the U.S.-based Air Transport Association has approved a fuel blend of up to 50% organic waste and non-food material (i.e