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168,100 articles from ScienceDaily

Conservation Of Freshwater Fish Biodiversity: A Challenge For The Countries Of The South

Scientists have made the first global-scale analysis of the processes leading to freshwater fish invasion in river basins. This phenomenon affects most river ecosystems of countries of the Northern hemisphere. However, in the context of economic growth developing countries are now experiencing, their river basins, home to the greater part of freshwater fish biodiversity, are at risk of the same...

Space Tourism: Suborbital Vehicle Expected To Fly Within Two Years

A small California aerospace company has just unveiled a new suborbital spaceship that will provide affordable front-seat rides to the edge of space for the millions of people who want to buy a ticket. The company, XCOR Aerospace, of Mojave, CA, announced that its two-seat Lynx suborbital spaceship will carry people or payloads to where they will experience weightlessness and see the stars above...

Who's Bad? Chimps Figure It Out By Observation

Chimpanzees make judgments about the actions and dispositions of strangers by observing others' behavior and interactions in different situations. Specifically, chimpanzees show an ability to recognize behavioral traits and make assumptions about the presence or absence of these traits in strangers in similar situations thereafter. Chimpanzees have sophisticated social skills and there is evidence...


TUESDAY 25. MARCH 2008


Antarctic Ice Shelf 'Hangs By A Thread,' New Dramatic Images Show

British Antarctic Survey has captured dramatic images of an Antarctic ice shelf that looks set to be the latest to break out from the Antarctic Peninsula. A large part of the Wilkins Ice Shelf on the Antarctic Peninsula is now supported only by a thin strip of ice hanging between two islands. It is another identifiable impact of climate change on the Antarctic environment....

Birth Control Pill Effective In Timing IVF Treatments, Study Shows

Women who have tried to conceive using in vitro fertilization (IVF) methods are painfully aware that timing is of the essence. There are cancelled vacations, too many sick days taken from work, and the necessity to plan everything around "the treatment." In a surprising finding, researchers have discovered that the same pill used to prevent pregnancy can actually help a woman conceive....

Will Whole Genome Research Result In Genetic Profiling?

Interest in whole-genome research has grown substantially over the past few months. But what are the ethics issues associated with this work? In whole-genome research, participants quickly lose control over access to their personal information, and they run the risk of "genetic profiling."...

Earliest Signs Of Corn As Staple Food Found After Spreading South From Mexican Homeland

A new technique for examining ancient cooking pots has produced the earliest directly dated examples of domesticated corn (maize) being consumed on the South American continent. The discovery shows the spread of maize out of Mexico more than 9,000 years ago occurred much faster than previously believed and provides evidence that corn was likely a vital food crop for villages in tropical Ecuador at...

Elderly Improve With Exercise, Too

The 2005 Dietary Guidelines for Americans strongly urge people to engage in regular physical activity and avoid sedentary pastimes. That's because previous research has provided evidence that physical activity and nutrition work together for better health. Scientists now report on how the elderly also can engage in physical activity to improve quality of life....

'Digital Skills Divide' Emerging

While the "digital divide" may be narrowing in terms of access to the Internet, a significant "digital skills divide" is emerging. Researchers found the higher the socio-economic status, the greater the time spent on the Web and the more sophisticated the search and evaluation skills. Google was the favored search engine by parents in the high socio-economic group....

Facts On Fats Could Prompt Healthier Eating

The 2005 Dietary Guidelines for Americans included --- for the first time --- recommendations that U.S. consumers keep their intake of trans fatty acids as low as possible. The dietary guidelines now recommend consuming less than 10 percent of daily calories from saturated fatty acids; that's 22 grams or less for a 2,000-calorie diet. But a 2007 data analysis shows that about 64 percent of adults...

Environmentally-Friendly Controls For Peach Tree Pests

Peach growers combat several insects that harm their crop, usually using chemical pesticides to do so. Agricultural Research Service scientists are seeking environmentally friendly alternatives. For the peachtree borer, the researchers found a beneficial nematode....

Ants Are Experienced Fungus Farmers

It turns out ants, like humans, are true farmers. The difference is that ants are farming fungus. Entomologists are providing new insight into the agricultural abilities of ants and how these abilities have evolved throughout time....

Baby Boys Are More Likely To Die Than Baby Girls

Male infants in developed nations are more likely to die than female infants, a fact that is partially responsible for men's shorter lifespans, reveals a new study. The paper analyzes 15 countries spanning three continents and hundreds of years. It finds that the gender gap in infant mortality was as high as 30 percent at its peak around 1970....