If you look up in the sky, the only thing you usually see is some blue, a cloud here and there, and maybe a plane or a bird, but apart from that… nothing. However, it turns out that there’s quite an invisible world out there right above you! Check it out:

Professor Miklós Zrínyi of Semmelweiss University in Budapest, Hungary, has invented a magnetic gel which can be shaped in various forms and then moved using magnetism. Soft magnetic materials like this one could be used for artificial muscles in robots, or to replace rigid machine components, such as valves. Other teams are also working on […]