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SCIENCE & THE PUBLIC BLOG
A government panel wants Science and Nature to withhold data that could be used to make bird flu more deadly. See “Researchers, journals asked to censor data.”

ENVIRONMENT
Survival rates of young fish could suffer from ocean acidification levels expected this century. Read “Acid test points to coming fish troubles.”

ON THE SCENE BLOG
Tiny competitors raced (below) as a way to learn how cells move. Learn more in “Vying for the title of World’s Fastest Cell.”

HUMANS

A big New World population decline after European contact left a genetic mark. See “ DNA highlights Native American die-off .”