ScienceDaily: Top Environment News |
- Another vertebrate species reported extinct from the Hawaiian Islands
- Cost from ship-borne invasive species to the Great Lakes coud be as much as $800 million annually
- Scientists refine Earth's clock
- Growth around Yellowstone, Glacier and other national parks compared
- Afghans share unique genetic heritage, DNA analysis shows
- Molecular Braille created to identify DNA molecules
| Another vertebrate species reported extinct from the Hawaiian Islands Posted: 31 Mar 2012 06:59 AM PDT A species of lizard is now extinct from the Hawaiian Islands, making it the latest native vertebrate species to become extirpated from this tropical archipelago. The copper striped blue-tailed skink (Emoia impar) -- a sleek lizard with smooth, polished scales and a long, sky-blue tail -- was last confirmed in the Na'Pali coast of Kauai in the 1960s. But repeated field surveys on Kauai, Oahu, Maui and Hawai'i islands from 1988 to 2008 have yielded no sightings or specimens. |
| Cost from ship-borne invasive species to the Great Lakes coud be as much as $800 million annually Posted: 29 Mar 2012 11:19 AM PDT A new article assigns a dollar figure on the cost to the Great Lakes from invasive species that originate in the ballast water of ocean-going vessels. |
| Scientists refine Earth's clock Posted: 29 Mar 2012 11:19 AM PDT New research has revealed that some events in Earth's history happened more recently than previously thought. Scientists have refined the data used to determine how much time has passed since a mineral or rock was formed. They report uranium isotopic composition of minerals, used to date major geological events, which are more accurate than previously published. |
| Growth around Yellowstone, Glacier and other national parks compared Posted: 29 Mar 2012 09:47 AM PDT The land around Yellowstone and Glacier national parks might look like it's filling up with people and houses, but it's nothing compared to the rate of development around some other US national parks, according to a new study. |
| Afghans share unique genetic heritage, DNA analysis shows Posted: 27 Mar 2012 07:00 PM PDT A study by the Genographic Project has found that the majority of all known ethnic Afghans share a unique genetic heritage derived from a common ancestral population that most likely emerged during the Neolithic revolution and the formation of early farming communities. Through detailed DNA analysis of samples from 27 provinces, the Genographic team found the inter-Afghan genetic variability to be mostly attributed to the formation of the first civilizations in the region during the Bronze Age. |
| Molecular Braille created to identify DNA molecules Posted: 27 Mar 2012 06:55 PM PDT Researchers have developed a method to detect sequence differences in individual DNA molecules by taking nanoscopic pictures of the molecules themselves. |
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