New Clues Add 40,000 Years to Age of Human Species
...s,?he adds. The results revealed how long ago the eruption occurred: roughly 196,000 years. "This provided an unambiguous maximum age for the fossils,?says McDougall. Further supporting the dates, the researchers linked sediments deposited by the Omo River to periodic, well-dated sapropels ?layers of orga...Researchers discover underwater volcano
...ed the unique biological community surrounding the eruption site, and were amazed to find an "Eel City," a community of hundreds of slithering eels. This new volcano, dubbed Nafanua after the ferocious Samoan goddess of war, did not exist just fours years ago, according to co-chief scientists Hubert Staudige...Asleep in the deep: Model helps assess ocean-injection strategy for combating greenhouse effect
...ven deadly water eruptions." In 1986, a CO2-driven eruption in Cameroon's Lake Nyos killed some 1,700 people, as well as animals in the area; two years earlier, a smaller release of CO2 from Lake Monoun in the same country resulted in 37 human deaths. The deaths were not directly caused by the explosions, but...Serious adverse reactions to smallpox vaccine appear to be limited
...al data. Two cases of generalized vaccinia (a skin eruption in reaction to vaccination) and 1 case of postvaccinial encephalitis (inflammation of the brain) were detected. No preventable life-threatening adverse reactions, contact transmissions, or adverse reactions that required treatment with vaccinia immun...Ancient DNA provides clues to the evolution of social behavior
... a genetic bottleneck. Chan thinks that a volcanic eruption known to have occurred in the Andes roughly 3,000 years ago, combined with environmental change and competition from the larger species of tuco-tuco, likely caused the die-off. Most genetic studies rely entirely on modern DNA to estimate historical ...Poisonous Gas Caused Mass Extinction
...ss extinction. According to Discovery News, the eruption was the earth's biggest outpouring as the crust split and torrents of lava were released. They covered vast swaths of land in present-day Siberia and created the Siberian Traps, a large area of igneous rocks around the city of Tura. New evidence f...The Lurking Tsunami: Are We Ready?
... underwater activity, like an earthquake, volcanic eruption or a landslide, which displaces a large body of water. In the open sea, these waves measure up to 15 cms and are of no consequence, but on heading landward, their speed diminishes as they assume gigantic proportions to conserve the total energy. They...Good Oral Health Practices Should Begin in Infancy
...ng a visit to the dentist within six months of the eruption of the first tooth, and no later than the child's first birthday. Preventive care such as cleanings and fluoride treatments provide your child with "smile" insurance. Routine dental exams uncover problems that can be treated in the early stages, when...Blue Moon at Midnight from June 1
... September 1950. In the aftermath of the massive eruption of Mount Pinatubo in the Philippines in June 1991 there were reports of blue moons (and even blue Suns) worldwide. The phrase "Once in a blue Moon" was first noted in 1824 and refers to occurrences that are uncommon, though not truly rare. Yet, to ...Study Finds That Lincoln Suffered from Smallpox During Gettysburg Speech
...evere pain in the head and back, prostration, skin eruption plus the severity and approximately 21-day duration of Lincoln's illness," said Dr. Armond S. Goldman, an emeritus professor in the Department of Pediatrics at UTMB and lead author of the study. "Smallpox was rampant in the United States at that ...