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For the next year, Apple has four iPhones to sell you. Maybe you're thinking about upgrading and wondering which iPhone is best for you? Let Gizmag lend a hand, as we compare the features and specs of the four iPhones you can buy today.

As one of our most relied upon construction materials, concrete makes a significant contribution to our overall carbon emissions. By altering the quantities of materials used in this process, scientists have uncovered a method of cement mixing that could reduce these emissions by more than half.

If you'd like to start your day with the perfect cup of coffee, you may need to start getting up four hours earlier. A new coffee maker from Proper Coffee takes up to this long to produce a brew. The Imperial Drip uses a cold-drip process that's said to extract the most flavor from the coffee.

Two architecture and design students studying at Vienna's University of Technology have designed a cargo carrier made from cardboard. The Packtasche could offer cyclists a cheap and convenient way to carry their groceries.

Subaru's Impreza has been given a midlife freshen up, debuting a set of styling upgrades and a new infotainment system, along with the introduction of the Japanese manufacturer's EyeSight system to the range.

Maritime smugglers will often hide contraband in false hulls or propeller shafts within their boats. What if there were stealthy, inexpensive, underwater hull-hugging robots that could check the boats out, without the crews even knowing they were there? That's just what a team at MIT is developing.

Monaco-based Russian billionaire businessman and hobbyist architect Vasily Klyukin has created a concept for a modern hospital that resembles a ship. He intends for it to be the "world's first hospital that nobody is afraid to visit."

Coca-Cola South Africa has partnered with bottler Coca-Cola Fortune and communications company BT Global Services to provide underserved South African communities with free Wi-Fi ... which will be built into Coke vending machines.

Encrypted phone calls and texts are no longer just the domain of the expert or the "bad guy." Gizmag looks at free or inexpensive apps designed to secure your texts and phone calls from man-in-the-middle attacks, provider backdoors, and the weaknesses of plain text MMS.

Jiminy Cricket may be able to do more than guide our conscience: he, or his kin, may also provide food security solutions for a hungry world. However insects-as-food struggles to find widespread traction amid problems with standardization of food safety standards and government disinterest.

The solar-powered UAV previously known as the Qinetiq Zephyr, which is now part of the Airbus High Altitude Pseudo-Satellite (HAPS) programme and called the Airbus Zephyr, has continued it's record-breaking ways in its first civil flight in the skies over Dubai earlier this month.

Using the ALMA group of radio telescopes, astronomers have discovered a carbon-based molecule with a branched structure – a common feature in molecules that are required for life to form – within a giant gas cloud in the star-forming region of Sagittarius B2.