What actually causes aging? When does aging really begin? Two Northwestern University scientists now have a molecular clue. In a study of the transparent roundworm C. elegans, they found that adult cells abruptly begin their downhill slide when an animal reaches reproductive maturity.A genetic switch starts the aging process by turning off cell stress responses that protect the cell by keeping important proteins folded and functional. The switch is thrown by germline stem cells in early adulthood, after the animal starts to reproduce, ensuring its line will live on.
How bees naturally vaccinate their babies When it comes to vaccinating their babies, bees don't have a choice -- they naturally immunize their offspring against specific diseases found in their environments. And now for the first time, scientists have discovered how they do it.
New study exposes negative effects of climate change on Antarctic fish Scientists at University of California Davis and San Francisco State University have discovered that the combination of elevated levels of carbon dioxide and an increase in ocean water temperature has a significant impact on survival and development of the Antarctic dragonfish (Gymnodraco acuticeps). The research article was published today in the journal Conservation Physiology.
UK Bog ecosystem threatened by climate change impacts An entire ecosystem is at risk from the effects of climate change on the UK’s blanket bogs, scientists at the University of Leeds have warned. These wetland habitats provide important feeding and nesting grounds for bird species including the dunlin, red grouse and golden plover. Blanket bogs are also the source of most of our drinking water and vital carbon stores. The scientists warn that the effects of climate change, such as altered rainfall patterns and summer droughts, could drastically affect bog hydrology, which in turn could affect insect and bird populations.
Forests take years to rebound from drought In the virtual worlds of climate modeling, forests and other vegetation are assumed to bounce back quickly from extreme drought. But that assumption is far off the mark, according to a new study of drought impacts at forest sites worldwide. Living trees took an average of two to four years to recover and resume normal growth rates after droughts ended, researchers report today in the journal Science.
Making Tastier Wines with Fewer Pesticides Wine-making is steeped in age-old traditions, but to address the threat of pests and concerns over heavy pesticide use, vintners are turning to science. With the goal of designing better grape breeds, scientists are parsing the differences between wild American grapes — which make terrible wine but are pest-resistant — and the less hardy grape species pressed for fine wines worldwide. They report their findings in ACS’ Journal of Agricultural and Food Chemistry.
Not all whaling is the same The Faroe Islands' annual 'grindadráp', in which hundreds of pilot whales are slaughtered with knives and hooks, is a horrifying spectacle, writes David Lusseau. But unlike industrial whaling it poses no threat to the species. And is it really any worse than the industrial factory farming that we routinely ignore?Anyone that signs a petition to stop the Faroese grindadráp only to go home and roast a chicken that never saw daylight or moved much when it was reared is a hypocrite.In the mid-20th century pilot whaling still took place in many north Atlantic nations such as the US and Canada.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.
Public File Liaison:
Station Contact Info:
8195 Front Beach Road Panama City Beach, FL 32407 Station: 850-234-7777 News: 850-230-5221 Fax: 850-233-6647