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Report
The finch, a key species in Darwin's theory of evolution.
Credit: Photo Stock.
By Francesca Colombo

Evolution Faster Than We Thought
Tierramérica spoke with scientists Peter and Rosemary Grant, who have documented that the process of mutations in finches in the Galapagos Islands is faster than Charles Darwin, father of evolutionary theory, realized.

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Dialogues
Pat Mooney.
By Diego Cevallos

A Crusade Against Nanotechnology
The award-winning activist Pat Mooney travels the world calling for a moratorium on commercial development based on nanoparticles, pointing to what he says are their potentially harmful effects.

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Accents
Children under 5 are affected most by environmental problems.
Credit: Claudio Contreras.
By Marcela Valente

Pediatricians Turn Spotlight on Environmental Risks
Hospitals in Mexico and Argentina have specialized units focused on children's health and the environment. But the region as a whole has a long way to go in this area.

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People

In this section, Tierramérica shares letters from our readers. If you'd like to send us your comments, please write to: cartas@tierramerica.org.

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Eco-briefs
Peru to launch "herbal Viagra"... Smuggling snakes by mail in Venezuela... Poisonous lizard protected in Guatemala... Construction put to hurricane test... Chilean metro grows, pollution declines... Negotiating payment for curbing deforestation...

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