[The New York Times]
Spikes in blood sugar can take a toll on memory by affecting the dentate gyrus, an area of the brain within the hippocampus that helps form memories, a new study reports. Researchers said the effects can be seen even when levels of blood sugar, or glucose, are only moderately elevated, a finding that may help explain normal age-related cognitive decline, since glucose regulation worsens with age.

[The New York Times]
"Third-hand" smoke identified as a health threat.

[EE Times]
A team of researchers in Italy and Switzerland found carbon nanotubes to be a biocompatible material that can be attached to specific neurons to enhance their natural signal-processing capabilities.

[New Scientist]
Elysia chlorotica is a lurid green sea slug with a gelatinous leaf-shaped body that lives along the Atlantic seaboard of the U.S. What sets it apart from most other sea slugs is its ability to run on solar power. Mary Rumpho of the University of Maine has now discovered how the sea slug gets this ability: it photosynthesises with genes "stolen" from the algae it eats.