鈥淏aby boomers have this perception that marijuana is about fun and freedom. It isn鈥檛; it鈥檚 about dependency, disease and dysfunction.鈥�
John Walters, director of the US Office of National Drug Control Policy, after a federal raid on a Californian facility providing medical marijuana (The Guardian, London, 11 August)
鈥淚 don鈥檛 think we have to worry about invisible people walking around any time soon.鈥�
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Jason Valentine, researcher in one of the teams working on an 鈥渋nvisibility cloak鈥� made from a metamaterial that can bend light the wrong way (Mail Online, London, 11 August)
鈥淭he cure is not to reduce the price, but, on the contrary, to raise it even higher to break our addiction to oil.鈥�
Danish prime minister Anders Fogh Rasmussen explaining how the US can solve its energy crisis (The New York Times, 10 August)
鈥淭hey could be hotter than 500 掳C, and if they are that hot, they will probably have quite different chemistry and life forms 鈥� we expect to find new species.鈥�
Jon Copley from the University of Southampton explains what he hopes to find when his autonomous submarine begins exploring the world鈥檚 deepest undersea volcanoes in the Caribbean (BBC News, 9 August)
鈥淚t smells like a mix of rotten fish and rotten meat. It鈥檚 quite impressive.鈥�
Frederic Lebreux, visitor to Belgium鈥檚 National Botanic Garden, on Amorphophallus titanum, which translates as 鈥渕isshapen giant penis鈥�. The seldom-blooming flower is 1.6 metres high (Reuters, 7 August)