Molecular biology fills gaps in knowledge of bat evolution
... that, Springer hopes, will expand the coverage of classifications of bats from the family level to the genus level and probe in more detail into the bat evolutionary record. He also plans to compare the completeness of the bat fossil record with that of other mammals....New DNA studies verify existence of three right whale species
...l can be used in tandem to test and revise species classifications and subsequently redirect conservation efforts for those populations most in need." Traditionally, mitochondrial DNA has been the preferred marker for descriptions of the genetic diversity within populations and for comparisons between different pop...Fossil records show biodiversity comes and goes
...he level above species in taxonomy, because genera classifications are more manageable and less often revised than species classifications; and includes only marine fossils because the records are longer and better preserved than records of land fossils. For their study, Muller and Rohde defined fossil diversity a...Scientists characterize proteome of human cornea
...ermore, the work is likely to improve the clinical classifications of corneal diseases. Identification of the protein profile of the normal human cornea may also be very useful in the effort toward generating artificial corneas for transplantation." To follow up on their initial research, Dr. Enghild and his colleag...New book expands biological classifications to account for 'alien' life
...RNA. The dominions would be placed within broader classifications called "arborea," which contain life that does not mix with that of other arborea. The Earth arborea would contain all life forms found on this planet and other arborea would contain life found away from Earth. Ward presents his new model in a book ...Satellite instrument helps tackle mysteries of ozone-eating clouds
...d of water crystals, were detected. There are two classifications of PSCs Type I clouds contain hydrated droplets of nitric acid and sulphuric acid, while Type II clouds consist of relatively pure water ice crystals. The presence of NAT was detected because of MIPAS' ability to map the atmospheric concentrations ...Experts advise world policies to cope with causes, rising consequences of creeping desertification
...e categories of environmental migrants / refugees, classifications that would help form corresponding assistance strategies: Environmentally-motivated migrants; environmentally-forced migrants, and;environmental refugees (potentially including disaster refugees). The environmentally-motivated migrant may leave a s...Study identifies common flaws in oncology microarray studies
...iscovery, there were spurious claims of meaningful classifications of outcomes, in which the authors did not perform adequate analyses to reach their conclusions. Among the 28 studies reporting supervised prediction, Dupuy and Simon found that 12 of those studies used biased estimates of the accuracy of their predic...Diesel exposure model reduces allergy risk assessment errors
...yfever) and asthma symptoms. "Accurate exposure classifications are imperative in studies of air pollution, and the land use regression model allows us to use our sampled measurements to predict a specific locations exposure level whereas proximity studies do not take sampled levels into account nor do they exami...Do you need sex to be a species?
...ts largely fell in line with traditional taxonomic classifications for most bdelloid species. And species identified as related on the DNA trees typically had similar morphology. The correspondence between the molecular and morphological results suggests that the majority of traditionally identified bdelloid species...ACS News Service Weekly PressPac -- April 11, 2007
...esign products exempt from current hazardous waste classifications will need to address not just lead, as the current wave of responses to European and Japanese regulations has shown, but also nickel, antimony and zinc, and most importantly, copper content." ARTICLE #3 FOR IMMEDIATE RELEASE "Leaching Assessments o...UF scientists discover new genus of frogmouth bird in Solomon Islands
...to a great extent, obscured by stale, hand-me-down classifications from an earlier era. A combination of detailed morphological and genetic analyses reveal that this frogmouth formerly dismissed as just a race of an existing species actually cannot be placed confidently in any existing genus, and so the data deman......ystem is synthesized from past global and regional classifications and extensive expert consultation. It includes 232 distinct ecoregions nested within 62 provinces that are in turn grouped into 12 realms. Each ecoregion has a relatively homogenous and distinct species composition. The classification, which avoids s...