Issue for the week of May 5th, 2012

Visitors carry unwelcome species into a once pristine environment (p. 20)

Planetary scientists seek to fill in gaps in outer solar system?s formative years (p. 24)

Heart-healthy drugs show promise against inflammation, cancer and the flu (p. 30)

Monkeys learn to distinguish words from nonwords, suggesting ancient evolutionary roots for reading. (p. 5)

Unusual field tests reveal how common insecticides, even at nonfatal doses, can erode colonies and threaten the future of bumblebees and honeybees. (p. 8)

A trio of fossils from China may tip the scales on dinosaurs? public image. (p. 9)

A small molecule called kartogenin prompts the manufacture of lost connective tissue in mice. (p. 10)

A mouse version of Epstein-Barr seems to prevent, not trigger, symptoms of the autoimmune disease. (p. 10)

For most conditions, knowing a person?s entire genetic makeup won?t help predict his or her medical history. (p. 11)

Tests on high-stakes math problems reveal key regions of brain activity linked to choking under pressure. (p. 12)

Stroke patients treated with brain stimulation show improvement in language skills. (p. 12)

Seeing images of food revs up reward areas in the obese and slows them down in severely underweight people, a brain scan study shows. (p. 13)

A study in mice links a high-fat diet to changes in the brain that might encourage weight gain. (p. 14)

Related developmental disorders affect 1.1 percent of U.S. 8-year-olds. (p. 14)

Compacting soil means the flood-prone city continues to sink. (p. 15)

Genes, not environment, play a key role in the prized fungus?s scent. (p. 16)

Analytical technique could lead to better crime scene investigation. (p. 16)

New measurements of distant galaxies support Einstein?s cosmological constant as the explanation for the universe?s accelerating expansion. (p. 17)

String theory?s take on the Higgs, newborn pulsars may have iron by-products, and coupled neutrons in beryllium nuclei revealed. (p. 17)

By 3.4 million years ago, two human relatives built differently for upright movement inhabited East Africa. (p. 18)

A South Africa cave yields the oldest secure evidence for a blaze controlled by human ancestors. (p. 18)

A proposed invisibility cloak for heat could shield computers or satellites from high temperatures. (p. 19)

Review by Bruce Bower (p. 34)

Review by Nathan Seppa (p. 34)

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Scientific method acting (p. 36)

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