Liquid Detection Tools

In light of the recently foiled terrorist plot here in the UK, and the poorly thought-out implementation of precautions in response (they’re worried about liquids being mixed together as a weapon, but they’re pouring them all into big communal vats in the airports?), it’s both a relief and a frustration to find that there is already technology available that could detect the types of explosives alleged to be at the centre of the plot. A relief, because I don’t want to hear of more innocent people dying for the ideologies of others; a frustration, because the technology costs a fortune, takes a lot of time to use effectively, and throws up a lot of false positives.

Block Rocks With Rocks

Improbable though it may seem, there’s a real risk that we will someday discover a huge asteroid on a collision course with our planet. The obvious question here is also the important one, i.e. ‘what the hell could we do about it’? Ridiculous movie plots aside, a fair few ideas have been kicked around before, but there’s a new scientific paper just out that suggests the simplest and most effective way to stop a big lump of rock hitting the Earth would be to place another smaller rock in orbit to absorb the blow. Added bonus – we could mine it for all sorts of goodies useful for further space exploration, too.

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