Letters

"Jeffrey D. Sachs is a great man, doing great things for people around the world," began a note from Trey Strawn of Winter Springs, Fla. "His battle against poverty is inspiring. 'Welfare States, beyond Ideology' [Sustainable Developments], however, is unscientific, biased and wrong." Find out why readers such as Strawn responded with some heat to Sachs's November 2006 column in the letters below. Correspondents were also drawn to fiery phenomena in other articles in that issue: from the mysterious sparkings in our brains' inner space explored in a special section on mirror neurons to the first light of outer space described in an article about the Dark Ages of the universe.

NEURON SEE, NEURON DO
I am a clinician who often works with children and adolescents with Asper¿ger's syndrome, and I am an author of two books on the subject.