Humans
We summarize the week's scientific breakthroughs every Thursday.
- Humans
Letters from the March 31, 2007, issue of Science News
On the hoof Do cows and other domestic-herd animals really emit more methane than bison and other wild-herd animals emitted before people came along? Do grass, alfalfa, and other pasture plants remove less carbon dioxide than do forests? There were open grasslands before pastures replaced some forests. I hope the people who are researching these […]
- Health & Medicine
Balancing Act: Excess steroids during pregnancy may pose risks for offspring
Heavy amounts of steroids taken during pregnancy can have long-term deleterious effects on offspring, a study of monkeys shows.
- Health & Medicine
Risky Flames: Firefighter coronaries spike during blazes
A disproportionate number of heart disease deaths among firefighters occur during blazes.
- Health & Medicine
Hepatitis B found in wrestlers’ sweat
Traces of hepatitis B have turned up in the perspiration of wrestlers, suggesting that the virus could spread to their opponents and teammates.
- Health & Medicine
Preemies respond to immunizations
Babies born prematurely rev up an immune response to two routine childhood vaccines as well as babies who are born full-term.
- Anthropology
Mysterious Migrations
Controversial new studies report that modern humans from Africa launched cultural advances in Europe at least 36,000 years ago and reached what's now western Russia more than 40,000 years ago.
- Health & Medicine
Planting the Seeds for Folate Enrichment
Florida scientists have engineered tomatoes with 20 times the ordinary amount of folate, making them the most concentrated source of this important vitamin ever measured.
- Humans
Letters from the March 24, 2007, issue of Science News
Story panned So we shouldn’t cook food in easily cleanable pots because we might release a little bit of maybe-not-even-toxic chemicals into the food (“Heating releases cookware chemicals,” SN: 1/27/07, p. 61)? Because a common chemical found worldwide is merely suspected of being linked to worldwide rates of exposure? Why are our U.S. companies being […]
- Humans
From the March 13, 1937, issue
Man helping snake, paraffin lenses for neutrons, and glass with a past.
- Humans
The Next Generation: Intel Science Talent Search honors high school achievers
A 17-year-old from Oklahoma City who built a homemade Raman spectra system took first place at this year's Intel Science Talent Search.
- Anthropology
Ancient Slow Growth: Fossil teeth show roots of human development
An extended period of childhood evolved in people at least 160,000 years ago.
- Health & Medicine
Brain Fix: Stem cells supply missing enzyme
Brain stem cells implanted into sick mice restored a missing enzyme and extended life span by 70 percent.
