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May 1, 2010Health
Genetics in the Gut: Intestinal census suggests how microbes can drive obesity and other metabolic ills; Katherine Harmon; May 2010; 10.1038/scientificamerican0510-22

July 29, 2010Mind & Brain
Dopamine Determines Impulsive Behavior: Brain scans illuminate the internal connection among the neurotransmitter, impulsiveness and addiction; Katherine Harmon

December 16, 2010Health
Drug-Resistant Genes Spread among Bacteria: Unlike other superbugs, a new class of antibiotic-resistant bacteria are gaining their power from easily transferable genes such as NDM-1; Katherine Harmon

September 1, 2012Health
Researchers Disagree about How to Extend Human Life Span: Two approaches to longevity research aim to extend the average life span out to a century or more; Katherine Harmon; Scientific American Volume 307, Issue 3; 10.1038/scientificamerican0912-54; Originally published as "How We All Will Live to Be 100" in Scientific American Volume 307, Issue 3

January 11, 2011Mind & Brain
The Chances of Recovering from Brain Trauma: Past Cases Show Why Millimeters Matter [Slide Show]: As doctors continue to monitor Rep. Gabrielle Giffords's condition, previous cases of brain injury resulting from bullets and other assaults can help explain what happens to the nervous system during major injuries--and how those rare recoveries are possible...; Katherine Harmon

June 2, 2011Biology
Pyramid versus Plate: What Should the USDA's Food Chart Look Like?: Nutritionist Marion Nestle explains why the new dietary model should help Americans understand how to eat better--and how it could be improved; Katherine Harmon

September 18, 2010Biology
Francis Collins, Lawmakers Debate Stem Cell Merits: In a congressional hearing Thursday top-level researchers argued that government-backed research should continue to explore all stem cell varieties; Katherine Harmon

October 12, 2010Biology
A Healthy Lifestyle Reduces Breast Cancer Risk for Women Either with or without a Genetic Predisposition: Women who followed weight, exercise and alcohol consumption guidelines had about the same lowered risk for getting breast cancer, even if they had a strong family history of the disease; Katherine Harmon

November 23, 2010Biology
HIV Drugs Taken Preemptively Cut Rate of Infection Almost in Half: HIV-negative gay and bisexual men who took prophylactic antiretrovirals regularly were less likely to become infected; Katherine Harmon

December 29, 2010Biology
The Body under General Anesthesia Tracks Closer to Coma Than Sleep: Studying brain waves and physiologic patterns in patients under general anesthesia might help researchers build new neurological models of disorders, such as comas and insomnia; Katherine Harmon

January 30, 2011Biology
Diets Low in Omega-3 Linked to Depressive Behavior in Mice: New research shows why some individuals deficient in beneficial fatty acids might be more prone to mood disorders; Katherine Harmon

December 7, 2011Biology
Genetics Explain How Bedbugs Infest a Building--or a Country: New genetic profiles of bedbugs help to explain how they have spread, and how inbreeding has helped them flourish; Katherine Harmon

September 7, 2009Health
Retrovirus Linked to Aggressive Prostate Cancer: Possibly joining the ranks of virus-linked cancers, virulent prostate cancers have shown a common thread: the XMRV gammaretrovirus; Katherine Harmon

October 6, 2009Health
New Vaccine May Immunize Addicts from Cocaine's Pleasurable Effects: Clinical trial data suggest that although pharmacotherapy for cocaine may be on the horizon, challenges remain; Katherine Harmon

October 8, 2009Health
Retrovirus Linked to Chronic Fatigue Syndrome, Could Aid in Diagnosis: Recently implicated in some severe prostate cancer patients, the retrovirus XMRV has now been found in many with chronic fatigue--changing the landscape for diagnosis and possible treatment...; Katherine Harmon

February 10, 2010Biology
Long-Locked Genome of Ancient Man Sequenced: Preserved in hair and bone samples for 4,000 years, the DNA of an early Greenlander reveals new clues about everything from skin color to migration patterns; Katherine Harmon

September 8, 2011Health
Preventable Deaths: Is U.S. Domestic Security and Public Health Spending Out of Balance?: A look at how much the U.S. has spent through Homeland Security since 9/11 and what the government spends on preventing deaths through public health; Katherine Harmon

June 2, 2015The Sciences
Treating Koala STDs May also Quash Their Essential Gut Microbes: Koalas rely on specialized bacteria to digest eucalyptus, but antibiotics to stop sexually transmitted infections might be killing the microbes off; Katherine Harmon Courage

July 30, 2014The Sciences
Mother Octopus Sets Longest Egg-Tending Record: More Than 4 Years on Baby Watch: Animals can take a year to gestate, but a deep-sea octopus has broken all previous records, hatching her eggs after 53 months; Katherine Harmon Courage

August 19, 2010Biology
Three Distinct Routes Detailed for How HIV Arises in Male Genital Tract: New research uncovers three methods of HIV development in the male genital tract that can make the virus look different from blood-borne populations; Katherine Harmon

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