Neurons follow blood-vessel highways to make their way across the brain.
The footage could lead to novel techniques to block the transmission of HIV.
Looking at the disease worldwide allows scientists to track efforts to fight it.
A roadmap to your favorite gustatory muscle.
New technique suggests how deep brain stimulation ameliorates symptoms.
The superstore may improve access for small private practices.
What life on another planet might look like, and other tidbits.
Obama also promises to return scientific integrity to government decision making.
The long-awaited reversal will lift federal funding restrictions on embryonic stem cell research.
Specially engineered bacteria will wax poetic.