organisation > National Academy of Sciences
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Users who became dependent on the drug before 18 saw later decline, study of 1,000 New Zealand residents claims.
Americas
Last Modified: 29 Aug 2012 05:16 GMT
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Scientists and experts are alarmed at amount of plastic debris and growing 'dead zones' in the world's oceans.
Features
Last Modified: 18 Jun 2012 11:09 GMT
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Climate-change deniers are on the ropes - but so is our planet.
Opinion
Last Modified: 10 Jun 2012 11:36 GMT
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Eyeless shrimp and fish with lesions are becoming common, with BP oil pollution believed to be the likely cause.
Features
Last Modified: 20 Apr 2012 15:57 GMT
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The largest environmental trial in US history begins March 5, as BP is sued for its 2010 oil spill disaster.
Features
Last Modified: 27 Feb 2012 07:02 GMT
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Steven Pinker, author of "The Better Angels of Our Nature", argues this may be the most peaceful era in human existence.
Features
Last Modified: 30 Jan 2012 16:09 GMT
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As oil, sickness and contamination persist, Gulf residents and lawyers file thousands of lawsuits against the oil giant.
Features
Last Modified: 03 Oct 2011 14:11 GMT
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Despite fuzzy legality, US law enforcement will soon be able to perform mobile iris scans and fingerprinting.
Features
Last Modified: 02 Aug 2011 16:25 GMT
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Global warming is causing a sharp decline of two penguin species, new study reveals.
Features
Last Modified: 12 Apr 2011 14:48 GMT
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Experts warn that any detectable level of radiation is "too much".
Features
Last Modified: 04 Apr 2011 15:46 GMT
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