|
|
| NewsIsFree : History |
RSS Feed URL : http://xml.newsisfree.com/newscat119.xml
Category : NewsIsFree
Total Views : 13 |
| Latest entries from this feed url |
ADV: Le PCC: Podcast de la Cabane au Canada
Le PCC vous emmène en balade dans Montréal et parfois un peu plus loin...
Sulfur In Marine Archaeological Shipwrecks -- The 'Hull Story' Gives A Sour Aftertaste
Sulfur in marine archaeological shipwrecks -- the "hull story" gives a sour aftertaste. Advanced chemical analyses reveal that, with the help of smart scavenging bacteria, sulfur and iron compounds accumulated in the timbers of the Swedish warship Vasa during her 333 years on the seabed of the Stockholm harbor.
[in ScienceDaily Headlines: Fossils & Ruins]
New Tool To Understand Evolution Of Multi-domain Genes Developed
Computational biologists have for the first time tackled the dilemma of how to study the ancestry of multidomain genes, which encode an important class of proteins called multidomain proteins that are crucial to human health. They found that standard methods for analyzing gene evolution, are critically flawed when applied to multidomain genes, mutations of which often are associated with cancers.
[in ScienceDaily Headlines: Fossils & Ruins]
El Niño May Have Been Factor In Magellan's Pacific Voyage
Archaeologists show that Ferdinand Magellan's historic circumnavigation of the globe was likely influenced in large part by unusual weather conditions -- including what we now know as El Niño -- which eased his passage across the Pacific Ocean, but ultimately led him over a thousand miles from his intended destination.
[in ScienceDaily Headlines: Fossils & Ruins]
Mitochondrial Eve' Research: Humanity Was Genetically Divided For 100,000 Years
Humanity was genetically divided for as much as 100,000 years, according to new findings. Climate change, reduction in populations and harsh conditions may have caused and maintained the separation.
[in ScienceDaily Headlines: Fossils & Ruins]
Climbing As Easy As Walking For Smaller Primates
Smaller primates expend no more energy climbing than they do walking. This surprising discovery may explain the evolutionary edge that encouraged the tiny ancestors of modern humans, apes and monkeys to climb into the trees about 65 million years ago and stay there.
[in ScienceDaily Headlines: Fossils & Ruins]
Gravity-defying Bird Beak Mystery Solved: Shorebirds Benefit From Surface Tension
As Charles Darwin showed nearly 150 years ago, bird beaks are exquisitely adapted to the birds' feeding strategy. A team of mathematicians and engineers has now explained exactly how some shorebirds use their long, thin beaks to defy gravity and transport food into their mouths. Some species rely exclusively on a feeding mechanism that takes advantage of water's surface tension, and so are extremely vulnerable to oil spills.
[in ScienceDaily Headlines: Fossils & Ruins]
Rapid, Dramatic 'Reverse Evolution' Documented In The Threespine Stickleback Fish
Evolution is supposed to inch forward over eons, but sometimes, at least in the case of a little fish called the threespine stickleback, the process can go in relative warp-speed reverse, according to a new study. The adaptation coincides with the '60s cleanup of toxic pollution in Seattle's Lake Washington.
[in ScienceDaily Headlines: Fossils & Ruins]
Geneticists Trace The Evolution Of St. Louis Encephalitis
Researchers have sequenced the entire genetic code of 23 strains of Flavivirus, the virus that causes St. Louis encephalitis, to understand its evolutionary history. This study, published in Molecular Phylogenetics and Evolution, found that a single mutation made the virus pathogenic to humans and that the North and South American strains divided about 116 years ago.
[in ScienceDaily Headlines: Fossils & Ruins]
Mice Can Do Without Humans' Most Treasured Genes
The mouse is a stalwart stand-in for humans in medical research, thanks to genomes that are 85 percent identical. But identical genes may behave differently in mouse and man, a study by evolutionary biologists reveals.
[in ScienceDaily Headlines: Fossils & Ruins]
Ancient Protein Offers Clues To Killer Condition
More than 600 million years of evolution has taken two unlikely distant cousins -- turkeys and scallops -- down very different physical paths from a common ancestor. But researchers have found that a motor protein, myosin 2, remains structurally identical in both creatures.
[in ScienceDaily Headlines: Fossils & Ruins]
|
|
|
