Looking for something that's no longer there is always difficult, but sometimes the lack of any traces of its existence can surprise. The area that once accommodated the birthplace of one of Britain's most controversial scientists is now covered by a hou

A brief blog to advertise this: It's a "Friday Evening Discourse" by me at the Royal Institution, as filmed by the Ri Channel, where you can also find Carl Sagan being very 70s and motivational in his Christmas lectures. I remember those, of course. Also

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Common in everything from research laboratories to television cables to server rooms in hardened government facilities, Faraday cages are a firmly enmeshed, yet seldom seen, part of our modern world. A Faraday cage is simply an enclosure of a conductive

In addition to enabling larger structures, these techniques could ease us past a sticking point on the way to a full-on, sci-fi, self-assembling nanobot: the problem of moving parts. "A human-scale analogy would be to take all the parts for a car, paint

The electricity needed for any country to successfully replace fossil fuels, both for transportation and everyday use, will have to come from nuclear generation. As the world's population and standard of living continues to climb, demand for more - and c