In the News
Last Time Carbon Dioxide Levels Were This High: 15 Million Years Ago,
You must go back 15 million years to find carbon dioxide levels as high as they are today, Earth scientists report. "The last time carbon dioxide levels were apparently as high as they are today and sustained at those levels, global temperatures were five to 10 degrees Fahrenheit higher than they are today," said Aradhna Tripati, UCLA assistant professor of Earth and Space Sciences and lead author. SIV Infection Of Natural Hosts Provides New Insights Into HIV Disease
Three related articles provide key new insights into the complexity of HIV/AIDS. The articles show that CD4 T-cell depletion, a critical symptom of AIDS, is likely a part of a multifaceted scenario that triggers disease rather than the only cause. Overweight Toddlers And Those Not In Day Care At Risk For Iron Deficie
Overweight toddlers and those not enrolled in day care are at high risk for iron deficiency, according to a new study. Based on data from a national survey of 1,641 toddlers, the study found that 20 percent of overweight toddlers were iron-deficient, compared to 8 percent of those at risk for being overweight, and 7 percent of normal-weight toddlers. White marlin: Abundance of a look-alike species clouds population stat
The prized white marlin is among the most overexploited open-ocean fish. It's the subject of intense international recovery efforts. A new study now shows that a look-alike species, the roundscale spearfish, makes up a relatively high proportion of the fish identified as "white marlin". As such, current biological information on white marlin is likely contaminated by a second species, and past white marlin population size assessments are now uncertain. Ocean Ecosystems Plagued By Agricultural Runoff
Researchers have long suspected that fertilizer runoff from big farms can trigger sudden explosions of marine algae capable of disrupting ocean ecosystems and even producing "dead zones"in the sea. Now a new study by Stanford University scientists presents the first direct evidence linking large-scale coastalfarming to massive algal blooms in the sea. Understanding How Obese Fat Cells Work
In obese individuals, fat cells are bloated and inflamed because they receive too many nutrients, including lipids. In these cells, various components cannot work properly anymore and, instead, they activate new proteins to cope with the situation. One of the most challenged organelles in obese fat cells is a maze-like compartment called the endoplasmic reticulum (ER) that makes proteins and lipid droplets and senses the amount of nutrients that enter the cell. Stealth Katamari T-Shirts
The hit game's creator goes subtle for new garment line. Plus:G4 slinks quietly away from "TV for gamers" concept. From the Wired News blog Game|Life. Americans born in the South may have a higher risk of dying from strok
The "stroke belt" has a tight hold. People born in the Southern stroke belt have a higher risk of dying from stroke as adults, even if they later move away, compared to people who were born in other parts of the country, according to new research. Ancient Maya Marketplace Located, Challenges Views On Goods Distributi
Coaxing answers from 1500-year-old clues hidden in soil clumps, a team of archaeologists and environmental scientists identified a marketplace in an ancient Maya city, calling into question archaeologists'widely held belief that people of the era relied on rulers to tax and re-distribute goods, rather than trading them with one another. Statins Reduce Loss Of Function, Keeping Old Lungs Young -- Even In Sm
Statins are known to be good for lowering cholesterol and maybe even fighting dementia, and now they have another reported benefit: they appear to slow decline in lung function in the elderly -- even in those who smoke.
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