The battery of the future? Iron powder

ironpowder

Think of iron powder as a charged battery. When it is burned, you get energy from it and what is left is a dead battery in the form of rust. By making iron dust out of the rust again, you recharge the battery. And you can do it again and again. The capacity of iron powder for energy storage is impressive.

Dear Asimov, here we are: robots will kill

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Future wars will be faster and more technological, but less human than ever: welcome to the era of robot soldiers. There is a perfect place to test advanced weapons: they are the Wallops Islands, a small patch of land off the coast of Virginia that seems to have come straight from Asimov's pen. If a fishing boat had passed there a year ago he would have seen half a dozen dinghies circulating in the area: a closer look would have revealed that the dinghies had no one on board. … Read more

Developed metal that repairs itself at room temperature

anewbonelike

For 6000 years we have made objects out of metal because it is strong and resistant: it takes a lot of energy to break it. The problem is that it takes a lot of energy to even repair it. You need a blowtorch that heats the metal parts up to 3500°C. Today, for the first time in the world, a research team has developed a way to repair metal at room temperature. A "regeneration" completely similar to the repair process of our bones, which will lead to the birth of... Read more

10 high-tech pocket gadgets to use every day

Over the years, the smartphone has brought together various devices that were once separate: music player, telephone, camera, video camera and so on and so forth. Yet there are still many high-tech gadgets to carry around: let's take a look at 10 technologies to carry with you every day. MINILOP Orbiter Fidget Spinner Tired of the same (already) old fidget spinner? This two-piece device consists of a magnetic ball that rotates a titanium disk producing a hypnotic… Read more