The orderInsectivora (from Latininsectum "insect" and vorare "to eat") in the past was used as a scrapbasket for a variety of small to very small, relatively unspecialised, insectivorous mammals. The taxonomy has been refined in recent years, and treeshrews, elephant shrews, and colugos have now been placed in separate orders. Molecular evidence also indicates that golden moles and tenrecs should be separated as a new order Afrosoricida comprising Chrysochloridae (golden moles) and Tenrecidae (tenrecs). Other evidence now indicates that even Erinaceidae (hedgehogs), Solenodontidae and Nesophontidae should also be placed in separate orders.
Traditionally, the golden moles of southern Africa and the tenrecs of Madagascar and Africa were grouped with the hedgehogs, shrews and moles in the Lipotyphla. However, there have always been minority opinions suggesting that Tenrecomorpha, or at least the golden moles, are not true Lipotyphlans.
UCSB center helps land $24M national center to study environmental impacts of nanotechnology Fri, 10 Oct 2008 00:00:00 -0400 (University of California - Santa Barbara) The Center for Nanotechnology in Society at the University of California at Santa Barbara helped to win the new University of California Center for the Environmental Implications of Nanotechnology, a five-year, $24 million center co-funded by the National Science Foundation and the US Environmental Protection Agency to study the environmental impacts of nanotechnology. Fat-regenerating 'stem cells' found in mice Fri, 10 Oct 2008 00:00:00 -0400 (Cell Press) Researchers have identified stem cells with the capacity to build fat. Although they have yet to show that the cells can renew themselves, transplants of the progenitor cells isolated from the fat tissue of normal mice can restore normal fat tissue in animals that are otherwise lacking it.The findings may yield insight into the causes of obesity, a condition characterized by an increase in both the size and number of fat cells. Landmark study unlocks stem cell, DNA secrets to speed therapies Fri, 10 Oct 2008 00:00:00 -0400 (Florida State University) In a groundbreaking study led by an eminent molecular biologist at Florida State University, researchers have discovered that as embryonic stem cells turn into different cell types, there are dramatic corresponding changes to the order in which DNA is replicated and reorganized.