NASA finds evidence of flowing water on Mars

NASA found evidence that briny water flows on Mars, raising chances that life could exist on the Red Planet.

Photos: NASA

Top 5 Smartphones to Buy Right this Minute - Best smartphone in the Market

The smartphone market in India is hot like never before. Nokia is losing its sheen and Samsung and Apple are racing ahead.
Consumers have a plethora of options to choose from. This may lead to a serious brainstorming session on their part. In case, you're planning to buy a smartphone, we've made life a little easier for you by complining a list of the top 5 smartphones to buy at present.
Take a look and then take your pick:

Samsung Galaxy S II

Okay, believe it or not but the truth is that Galaxy S II has usurped iPhone 4 from the throne of the smartphone empire. In a short period of time, it has stormed ahead of iPhone, which looked invincible at some point of time. The Galaxy S II's combines a thin and light design with the flexibility of hugely popular Android. Add to this a dazzling display and the best-in-class performance. It may have some minor flaws but they can be easily ignored for the great features it offers.
Why should I Buy it?
Big on performance, excellent display, ultra thing and light design, loaded with features, great battery performance.
Price: Rs 29,999
MensXP Rating: 4.5/5

Apple iPhone 4

Well, one of the reasons you should get this baby is because it's an Apple product after all! And iPhone 4 is in many ways the best phone Apple has ever made. It's faster that its predecessor, the 3GS. The Retina Display is simply amazing and sets the new standards in cellphone displays. The FaceTime App is indeed path-breaking and redefines the entire concept of video conferencing. And then its killer looks. It feels awesome to hold the phone in your hand.
Why should I Buy it?
Revolutionary features like FaceTime and iMovie, Stunning high-res display, brilliant camera (for video and still photography), superb battery life
Price: Rs 40,900 for iPhone 4 32 GB
MensXP Rating: 4.5/5

HTC Sensation

Often peddled as HTC's answer to Samsung's Galaxy S2 and iPhone 4, this Dual Core wonder is highly likely to attract people looking for an alternative to the first two phones. And the phone is indeed giving some serious competition to them. With a weight of just 148 gm and a beautiful design, Sensation is a pure joy in the hand. The phone was a CNET Editors' Choice Award winner and they said that it is “sensational in many ways”.
Why should I Buy it?
Excellent user interface, lovely display, 1.2 GHz Dual Core processor, 8 MP camera, excellent HD video recording, remarkable battery life
Price: Rs. 28,899
MensXP Rating: 4/5

HTC Desire S

This is an evolved successor to its massively popular ancestor - HTC Desire. Unibody design, a great interface, and the inclusion of Android 2.3 are being lauded all over. It is a seriously appealing mobile phone. Although is camera is mildly disappointing, the other features, which come at a competitive price, more than make up for that. Its software is intuitive and processor powerful.
Why should I Buy it?
Fantastic Unibody design, great performance, value for money,
Price: Rs 22,399
MensXP Rating: 4/5

LG Optimus 2X

Optimus 2X from LG is fitted with a speedy processor (Dual Core Tegra 2 1GHz) that makes it insanely fast and revs up the apps and user-interface transitions. Its appearance and feel may be slightly bulky but it offers some great hardware. Multimedia features are overwhelming. Once again, a good choice for those looking for options beyond Apple and Samsung.
Why should I Buy it?
Excellent display, powerful 1GHz Dual Core processor, slick scrolling and zooming, bustling with features
Price: Rs. 25,449
MensXP Rating: 4/5

Source: MensXp.com

Eco Bikes: Green Speed air-powered motorcycle aims to smash land speed record

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Eco Factor: Zero-emission air-powered motorcycle to use solar energy to compress air.

Industrial designer Edwin Yi Yuan is hinting toward a future where compressed air would be used as a primary fuel in vehicles such as motorcycles and bikes. The air-powered engine has been lurking around for years with Zero Pollution Motors working to launch air-powered cars soon. The idea does seem fantastic, as air-powered vehicles don't harm the environment with greenhouse gas emissions and above all, air is cheap and readily available. However, most air-powered engines fail in two ways – either the operating range is no long enough or the speed of the vehicle is too low.

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Edwin, accompanied by a team of student designers and their lecturer, has designed a concept air-fueled bike that possibly removes all obstacles associated with air-fueled vehicles. The motorcycle, known as Green Speed Air Powered Motorcycle, is based on an old Suzuki GP100 from the 1970s. The designers removed pretty much everything on the original bike, the petrol tank, the engine, gear box, etc., and just used the frame of the bike, its wheels and brakes.

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The engine that used is a rotary air engine. It is the invention of the Melbourne engineer Angelo Di Pietro. The engine is compact, lightweight and powerful and runs on compressed air from two compressed air tanks on the bike. It revs up to 10,000 RPM, and because of this the inventors didn't need any gear box on the bike. There is only one gear, which is just a sprocket bolted directly to the axis of the engine and chained to the rear wheel.

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Compressed air is stored in the bike's on-board carbon fiber tanks. Once mass produced, the bike will have solar panels that will generate enough energy to compress air and store it in the bike's tanks, which will increase its range indefinitely.

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As the bike was designed as a speed record setter, there is no headlight, brake light or indicator lights on the bike. Instead, there were three little cameras fitted at the front and tail on the bike that are used to record the run. The body works were designed to be aerodynamic and lightweight, and it will be made of fiber glass or carbon fiber.

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