Secrets of Aging
What does a normally aging brain look like? Are diseases of aging such as Alzheimer’s inevitable?
By Carol Barnes
What does a normally aging brain look like? Are diseases of aging such as Alzheimer’s inevitable?
By Carol Barnes
Researchers and pharma companies have tried to attack this disease by reducing amyloid plaques, but inflammation may be the real culprit.

Introducing the winners of our second annual “Labbies” awards
In the memory circuits of the aging brain and the signaling pathways of pain, science is trading mystery for mastery.
A veterinary vaccine spawned products that could clean the HIV virus from blood supplies.
Have researchers found the seat of urination control in a primitive brain region?
When it comes to studying cephalopod brains and behavior, it helps to have a philosopher around.
Indigenous populations are especially vulnerable to the effects of global climate change. A new research project aims to help them adapt.
September 2011′s selection of notable quotes
Purinergic signaling, not mystical energy, may explain how acupuncture works.
Measuring how individual cells differ from each other will enhance the predictive power of biology.
Editor’s Choice in Developmental Biology
Editor’s Choice in Immunology
Editor’s Choice in Cell Biology
Exposing the life and work of a visionary and troubled scientist opens a window onto the evolution of altruism.
Philippa “Pippa” Marrack has made some unanticipated discoveries about how the immune system functions in health and disease.
Junior Fellow, Harvard Society of Fellows, Harvard University. Age: 28
A new, genetically encoded tag for electron microscopy may revolutionize studies of specific proteins in cells and tissues.
A trip through the transcriptome
How to drive home your science with a visually pleasing poster
Art + Science Now, Signs of Life, Perceptions of Promise, Green Light
How an Italian scientist doing Frankenstein-like experiments on dead frogs discovered that the body is powered by electrical impulses.
Meet some of the people featured in the September 2011 issue of The Scientist.