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<jats:p> As turtle and dolphin corpses wash up on Gulf of Mexico beaches, scientists face a sleuthing challenge worthy of <jats:italic>CSI</jats:italic> : determining whether oil had a hand in the deaths. </jats:p>

<jats:p>The magnitude of the disaster in the Gulf of Mexico—the largest oil spill in U.S. history—has inspired an unprecedented and untested idea for combating it: an extensive sand trap. But scientists are dubious about the project's chance of success.</jats:p>

<jats:p>China could make huge strides in energy savings and pollution reduction: All it must do is wash its coal before burning it, experts say. But it doesn't, and this bodes ill for China's frantic efforts to meet a looming energy-efficiency target.</jats:p>

<jats:p>Last week, the Stratospheric Observatory for Infrared Astronomy glided off the runway of the Palmdale Airport in California for its first observational flight, drawing cheers from scientists who expect it to open a new window on the nearby universe.</jats:p>

<jats:p> <jats:italic>Science</jats:italic> Insider reported this week that the third time was a charm for members of the U.S. House of Representatives, which last week passed a reauthorization of the America COMPETES Act that would increase spending on research, science education, and innovation, among other stories. </jats:p>

<jats:p>Researchers will be releasing parts of their collections of samples taken from the Yanomamö in Brazil and Venezuela during fieldwork in the 1960s and early 1970s to the Brazilian Embassy in Washington, D.C., which in turn will escort them back to Brazil and the Yanomamö tribe.</jats:p>

<jats:p> <jats:italic>Science</jats:italic> NOW reported this week that swarming desert locusts grow bigger brains, a new treatment for Ebola, the immune system may be to blame for obsessive-compulsive disorder, dirt may determine a country's destiny, and violent galaxy collisions power mega–black holes, among other stories. </jats:p>

<jats:p>So far, genome-wide association studies have not found common genes with a big impact on heart health; researchers hope that the low-effect genes they are finding will help identify pathways and drug targets.</jats:p>

<jats:p>With new tools and painstaking analyses, researchers are helping to detect clandestine nuclear-weapons research and keep deadly material from going astray.</jats:p>