-
Observations
Which sperm will win the race to the egg: the green one or the red one?
Once they're inside the female reproductive organs, sperm pull out all the stops to outrace their rivals to the egg—especially if the opponent comes from another male. The process that determines which sperm wins, called "postcopulatory sexual selection," has been difficult to tease out, until now.
-
Observations
Transcription factors boost genetic differences to make individuals unique
-
Observations
Researchers create metal with a memory
-
Reuters
EPA to begin study on shale gas drilling
-
News
Small Dogs Prove Susceptible to Flea Poison
Warning that the powerful poisons can endanger dogs and cats, the U.S. Environmental Protection Agency will require new instructions and labeling for flea products
Can Smiley Faces (and a 14-Step Program to Stop Overconsumption) Save the Global Climate?
Thin Wallets, Thick Waistlines: New USDA Effort Targets Link between Obesity and Food Stamps
Advances in disease surveillance: Putting the "public" into public health
Readers Respond on "A Path to Sustainable Energy by 2030"
Condoms for the World Cup and other ways to keep HIV at bay
Researchers Gain New Insights into the Mystery of Thalidomide-Caused Birth Defects
New Hope for Battling Brain Cancer
Malaria rates drop in the Americas, but travelers still worry
Another reason vitamin D is important: It gets T cells going
Think Twice: How the Gut's "Second Brain" Influences Mood and Well-Being
Advances in disease surveillance: Putting the "public" into public health
Thin Wallets, Thick Waistlines: New USDA Effort Targets Link between Obesity and Food Stamps
Which sperm will win the race to the egg: the green one or the red one?
Transcription factors boost genetic differences to make individuals unique
Condoms for the World Cup and other ways to keep HIV at bay
Can Smiley Faces (and a 14-Step Program to Stop Overconsumption) Save the Global Climate?
Researchers Gain New Insights into the Mystery of Thalidomide-Caused Birth Defects
Scientific American Magazine
Health & Medicine Podcast
-
Mine Injuries Rise Right after Daylight Saving Time
click to enable
-
Message to Mosquitoes: Urine Trouble
click to enable
- Subscribe: RSS · iTunes · All Podcasts
Discussions in Health & Medicine
- Most Commented
Thin Wallets, Thick Waistlines: New USDA Effort Targets Link between Obesity and Food St | 32 comments - Most Recent Comment
at 02:09 AM by mzjacobson on
Readers Respond on "A Path to Sustainable Energy by 2030"
ALL SLIDESHOWS Health & Medicine Slideshows
ALL VIDEO Health & Medicine Videos
Health & Medicine News from Our Partners
Health & Medicine Archive
Subscription Center
Health & Medicine Newsletter
Get weekly coverage delivered to your inboxScience Jobs of the Week
- Senior Lab Technician
Lab21
Liverpool,UK - Junior Professorship
University of Hamburg
Hamburg Germany - > More science jobs from

MORE TOPICSExplore Health & Medicine
Editor's Pick
-
Does the U.S. Produce Too Many Scientists?American science education lags behind that of many other nations, right? So why does it produce so many talented young researchers who cannot find a job in their chosen field of study?
Latest Stories on ScientificAmerican.com
News
Macro-Weirdness: "Quantum Microphone" Puts Naked-Eye Object in 2 Places at Once
Observations
Which sperm will win the race to the egg: the green one or the red one?
Observations
Transcription factors boost genetic differences to make individuals unique
Observations
Researchers create metal with a memory
Features
Salt 'n Power: A First Look at the Lithium Flats of Bolivia [Slide Show]