“ Lunar orchard This is hydroponics, isn't it? The article does not say where nutrients come from. Are they supplied in the seed envelopes? Because... (read full comment) ” 

Posted on September 16, 2010 at 6:14 AM EDT

“ I agree. Ariely's is a nice example of thrifty behaviour from a behavioural economist. True to type! (read full comment) ” 

Posted on June 15, 2010 at 6:35 AM EDT

“ Superb Sunday review The Spanish writer Gracián (XVII Century) once wrote (my apologies for the translation!): What's good, if brief, twice good. (read full comment) ” 

Posted on June 14, 2010 at 5:30 AM EDT

“ Humble question I'm a humble agricultural engineer, interested in technological knowledge and its accomplishments. But, pray tell me, what's the... (read full comment) ” 

Posted on May 25, 2010 at 6:42 AM EDT

“ The problem with metaphors I'm not a physicist, therefore I cannot fully grasp the implications of the current debate among preceding commentators... (read full comment) ” 

Posted on January 10, 2010 at 6:33 AM EST

“ Political lithium? The ‘Salar de Uyuni’ in the Bolivian Altiplano is the world's largest source of lithium (see the latest issue of TR) Bolivia... (read full comment) ” 

Posted on January 4, 2010 at 4:05 AM EST

“ I fully agree with these comments. Monitoring China's emissions is basically a political problem, which solution is beyond a technical fix. (read full comment) ” 

Posted on December 21, 2009 at 4:05 AM EST

“ This is not a valid comparison. In those times, for example, Spaniards were converting *savages*; i.e. people devoid of any moral content according... (read full comment) ” 

Posted on November 24, 2009 at 3:18 AM EST

“ Fixing an election Perhaps the case closest to the author's concern is the plebiscite, where the issue is just one and the answer is either Yes or... (read full comment) ” 

Posted on September 22, 2009 at 11:28 AM EDT

“ I don't think Big Oil, Big Coal and all the big energy bunch are so morons as to block the development of biofuels. Because they are capitalists to... (read full comment) ” 

Posted on July 28, 2009 at 5:02 AM EDT