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the nano world is really, really bizarre. when matter is reduced to its smallest dimensions, it's made up of quantum dots — nanoparticles so tiny that their size determines their properties. alexey ekimov, moungi bawendi and louis brus discovered and developed this artificially created collection of semiconducting nanoparticles. they are just a few millionths of a millimetre wide and glow blue, red or green when exposed to light. quantum dots already have commercial and scientific uses and, infuture, could contribute to flexible electronics, thinner solar cells and encrypted quantu...

the bill moved a step closer last night, passing through the house of representatives on wednesday, but the clock is ticking. and do you know your o's from your e�*s, your g's from yourj's? the pressure mounts in washington, as the final of the national annual spelling bee gets under way. i'll put our panel to the test. but first — the legal challenge launched by the government. it's over demands from the covid public inquiry that ministers�* whatsapp messages from the pandemic are released. in a letter, the cabinet office said it was doing so "with regret" but that the request...

plans for supermarkets to introduce a cap on the price of basic food items to help tackle the rising cost of living. now on bbc news, unspun world withjohn simpson. hello, and thanks forjoining me here at the bbc�*s headquarters in central london. is there any sign yet of the much—heralded counteroffensive by ukraine? for the west, in ukraine, if they were to go too early ahead of all of that hardware being in place, then we could see the front lines we see now in place for some time to come. after the g7 summit in hiroshima, is a chinese attack on taiwan more likely or less like...

is there any sign yet of the much heralded counteroffensive by ukraine? for the west and ukraine, if they were to go too early, ahead of all that hardware being in place, then we could see the front lines we see now in place for some time to come. after the g7 summit in hiroshima is a chinese attack on taiwan more likely likely or less likely? i think for now xijinping has made the calculation that he simply can't afford to invade taiwan. and should we lose sleep at night for fear that artificial intelligence, ai, is going to take over the world? we are going to have to have systems ...

of downing street earlier this week, has been released while under investigation. he was detained on thursday on suspicion of criminal damage and dangerous driving. hello and thanks forjoining me here at the bbc�*s headquarters in central london. is there any sign yet of the much—heralded counteroffensive by ukraine? for the west and ukraine if they were to go too early, ahead of all that hardware being in place, then we could see the front lines we see now in place for some time to come. after the g7 summit in hiroshima is a chinese attack on taiwan any more likely likely? —â€...