Many young people know about the effects street drugs can have on their physical health. But not as many are aware of the effects it could have on their mental health.

许多年轻人都知道街头毒品对人身体健康产生的影响，但并不是很多人都能意识到它们还会对人的精神健康产生影响。

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By the early Eighties, the youths of the crumbling Broadwater Farm estate had formed the Tottenham Mandem and were starting to make serious money from selling drugs and carrying out street robberies.

八十年代初，在如今正分崩离析的布罗德沃特农场（Broadwater Farm）的社会底层，一群年轻人组成了托特纳姆曼德姆帮派（Tottenham Mandem），并开始以贩卖毒品和街头抢劫赚大钱。

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Which is more likely to spur innovation: being hounded by Wall Street to produce new drugs or being buried in the thick bureaucracies of a giant drug company?

FORBES: Should Pfizer Buy Biogen? No.

Hani Abou El Kheir, 16, was killed in a suspected drugs-related attack in Lupus Street, Pimlico, on 27 January.

BBC: Hani Abou El Kheir

The 2011 Street Drug Trends Survey by DrugScope, a drugs-information charity, which was released on November 16th, provides some details.

ECONOMIST: Drug use and abuse