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If you think that you've been seeing some funny-looking airliners in the past couple of months, you're not imagining things. On February 18th, a United Airlines Boeing 737-800 made the world's first commercial flight by an aircraft equipped with fuel-saving Split Scimitar Winglets.

What's that? A boat, a helicopter, some type of seaplane? It's the Helicat 22. This unique watercraft won't take off into the air, but it uses a helicopter-influenced catamaran design for a fast, stable ride over choppy water.

A retractable hardtop for the open seas, the Reversys Boat is a sleek concept designed to go from closed to open cabin in a matter of seconds. Its electric roof system offers three different configurations, allowing the captain to quickly react to the changing weather.

Panasonic is reporting a 25.6 percent conversion efficiency for its HIT (Heterojunction with Intrinsic Thin layer) solar cells, which it claims as a world record for crystalline silicon-based solar cells of a "practical size."

The Nannup Holiday House, by Iredale Pedersen Hook Architects, strikes a careful balance between allowing its owners to feel in touch with nature, without letting nature run riot.

Although no one is saying that aircraft carriers will soon be able to fuel their jet fighters using water from the ocean, such a scenario has recently come a step closer to reality. Scientists have successfully flown a model airplane that was running purely on fuel derived from sea water.

Bentley has been talking casually about adding a hybrid for years now, occasionally dropping the green buzzword into an interview or press release. It's now moving on to showing previews. The Bentley Hybrid Concept is the first official look at Bentley's plug-in hybrid future.

The benefits to health and wellbeing of having plants and greenery around an office are well documented. A recent project by Ingameoffice is more than just a few pot plants, though. Its TYJ Office Building refurbishment uses a wall planting system in which plants can be moved around.

In 2011, paraplegic Rob Summers was able to temporarily regain limited use of his legs, thanks to an experimental technique known as epidural electrical stimulation of the spinal cord. Now, in a new study, Summers and three other paraplegic test subjects have shown even more promising results.

London-based Lix Pen has developed a 3D printing pen that's claimed the smallest in the world. The Lix pen is 0.55 in (14 mm) in diameter and 6.45 in (164 mm) long.

One of the biggest smartphones of the year is going to hit store shelves tomorrow. Gizmag has gotten an early look at the Samsung Galaxy S5, and, though we'll have to wait a bit for our full review, here are our early impressions.

An elite team of commandos zip across rough enemy terrain, on motorcycles that produce no engine noise, yet that also have more range than pure electric bikes ... That's a scenario that DARPA would like to make real, so it recently gave a grant to Logos Technologies, to develop the bikes.