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We’re so used to having devices powered by lithium-ion batteries that it’s hard to imagine using anything else, but there are plenty of alternatives. The latest, an aqueous hybrid capacitor, is stable, safe and boasts high energy and power densities, recharging in as little as 20 seconds.

Déjà vu is an eerie feeling, and it's weirder when it’s coupled with the feeling that a person can predict what’s about to happen. To investigate, cognitive psychologist Anne Cleary has developed a technique to induce déjà vu, and test whether it really helps people predict the immediate future.

​For kids young and old, there is a certain enchantment to a treehouse escape. Incorporating elements of nature as load-bearing structures makes for some inventive and attractive design, and in some cases, the kind of luxury you wouldn't expect to find suspended above the forest floor.

​Vertigo is a very common condition, but it can be difficult to assess and to treat. It was with this in mind that a German consortium developed the headphone-based EQUIVert biofeedback system. It is claimed to be able to make the condition easier to understand, and to cure.

Lockheed Martin has won a US$150 million contract with options for another US$942 million to develop and manufacture two high-energy laser weapons for the US Navy. The new systems will combine Lockheed's first-of-a-kind HELIOS system for defense against UAVs with long-range ISR capabilities.

The International Space Station (ISS) is about to get a strange new crew member. The Crew Interactive Mobile Companion – or CIMON for short – is described by Airbus as a kind of flying brain, and will assist with experiments during the upcoming Horizons mission.

Vintage Electric offers a few e-bike options for getting around California, and for its latest ride it has enlisted one the Golden State's most iconic figures. The Jeff Clark Signature Cruz has the legend's fingerprints all over it, and offers fellow surfers a stylish way to cruise to the beach.

​At the end of a fun afternoon on fast bikes, we sat down again with motorcycling legend "Electric Terry" Hershner to finish our chat about the first electric Ironbutt, the Vetter Challenge, riding with his manic dog Charger and a future in which two-way EV charging can support the power grid.

​In the wake of Harley-Davidson’s eyebrow-raising announcement last month that the loudest, brashest motorcycle brand in the world is planning to go electric, the company has put its money where its mouth is and bought a stake in California-based electric motorcycle manufacturer Alta Motors.

​After first flagging a move into the EV space with 2016's I-Pace Concept, Jaguar has now made good on that promise with the official reveal of its first all-electric production car. The I-Pace SUV boasts a long range and impressive fast-charging numbers to keep time-poor owners on the move.

Wim Hof is an “extreme athlete” from the Netherlands, best known for his apparently superhuman ability to withstand intense cold for long periods of time. To observe what might be going on in his brain and body, scientists have now run a series of scans during these icy exposures.

Using infrared imaging technology a team at the British Museum has uncovered tattoos on two ancient Egyptian mummies, revealing the oldest ever discovered examples of figurative tattoos, which date back to Egypt's Predynastic period between 3351 and 3017 BCE.