[Today's Newspaper] from [Los Angeles Times]
[Environment]
Scientists find details of tumors killing off Tasmanian devils
The facial cancer devastating the species is a nerve tumor that escaped its original host, and is passed from one devil to another through bites. Researchers hope the discovery will lead to a vaccine.
By Thomas H. Maugh II
January 1, 2010
The facial cancers that are devastating populations of Tasmanian devils in Australia are a nerve tumor that escaped its original host and became a parasite of the cultural icon, passing from one devil to the next by bites when the animals are fighting or mating, researchers reported Thursday.
A genetic analysis of tumors from Tasmanian devils widely separated geographically shows that all the tumors are virtually identical and distinct from the animals' own genomes, researchers in the United States and Australia reported in the journal Science. The tumors probably arose from Schwann cells, which normally play a role in protecting and cushioning nerves.
The analysis provides clues to a way to diagnose the disease early and represents a major step toward the development of a vaccine that could protect the remaining animals in the wild, said biologist Elizabeth P. Murchison of the Cold Spring Harbor Laboratory in Cold Spring Harbor, N.Y., and the Australian National University in Canberra, lead author of the paper.
Tasmania is the only natural habitat of the fox-sized creatures, the world's largest marsupial carnivore. The animals release a foul odor under stress, and they screech and scream when they feed, a behavior that led to their name. Their powerful jaws enable them to eat entire cows, including bones and fur.
But beginning more than a decade ago, biologists noticed the appearance of the facial tumors, a condition now known as devil facial tumor disease. Confined primarily to the face and jaw, the tumors prevent the animals from eating, and they can also attack internal organs. The disease, which is invariably fatal, is one of only two types of cancers in animals that are transferred from animal to animal by tumor cells. The other occurs in dogs.
The population of devils in the wild has already dropped by 60%, and experts predict that unless something is done, the tumors could force the animals into extinction in 20 to 25 years. One possibility under consideration is the construction of 3-foot-high fences across broad parts of Tasmania that would keep infected animals isolated from healthy ones.
Analyzing the genetic code of the tumors as well as the complete set of genes that are turned on or off in a cancer cell, the researchers concluded that the tumors probably arose in a Schwann cell in a single Tasmanian devil, then began spreading through the population. How and where the first tumor developed, however, is still a mystery, but the team hopes the genetic analysis may provide some insight.
The researchers also found a protein called periaxin in the tumors. This protein, which is normally found in Schwann cells, could be a marker for early stages of the disease when it's present in the animals in high levels, they speculated.
Meanwhile, they are looking for genes that might influence the pathology and transmission of the tumor in the hope that they might provide a good lead on a vaccine.
[Environment]
Federal agencies may have to consider climate before they act
The Obama administration may issue an order that would expand the National Environmental Policy Act's scope to prevent global warming. The move could open up new avenues to challenge projects.
By Jim Tankersley
January 1, 2010
Reporting from Washington - The White House is poised to order all federal agencies to evaluate any major actions they take, such as building highways or logging national forests, to determine how they would contribute to and be affected by climate change, a step long sought by environmentalists.
Environmentalists say the move would provide new incentives for the government to minimize the heat-trapping gas emissions scientists blame for global warming. Republicans have opposed it as potentially inhibiting economic growth.
The new order would expand the scope of the National Environmental Policy Act, or NEPA, a landmark statute that turns 40 today. The act already requires federal agencies to consider environmental impacts such as land use, species health and air and water quality when approving projects.
By formalizing a requirement to consider effects on climate -- a step some agencies already take -- the administration would introduce a broad new spectrum of issues to be considered. It could also open up new avenues for environmentalists to attack, delay or halt proposed government actions. The environmental impact statements originally required by the act have become routine battlegrounds for environmentalists, developers and others.
Under the order, agencies would need to account for whether such factors as predicted rises in sea levels would affect proposed new roads along shorelines; or whether, because of temperature changes and species migration, clear-cutting a patch of forest would result in new types of trees replacing the originals.
California lawmakers mandated in 2007 that state-level environmental assessments take climate change into account.
"People will think longer and harder and smarter about what they build when they understand that the environment around them is changing," said David Bookbinder, chief climate counsel for the Sierra Club. Bookbinder was one of several environmental lawyers who petitioned the White House in 2008 to formally recognize climate considerations under the act.
The head of the White House Council on Environmental Quality, Nancy Sutley, said in an interview this week that federal agencies "should think about both the effect of greenhouse gas emissions, and the effects of climate change, on decisions they make."
She added that the administration's decision was not yet final.
Business groups and many Republicans say that federal environmental reviews already hamstring economic development with red tape and they've warned that adding climate to the process would just make things worse.
"Requiring analysis of climate change impacts during the NEPA process . . . will slow our economic recovery while providing no meaningful environmental benefits," Sens. James M. Inhofe (R-Okla.) and John Barrasso (R-Wyo.), wrote in a letter to Sutley in October.
"Projects across the nation are already experiencing delays or being canceled due to inappropriate and inefficient implementation and litigation from existing environmental regulations," the letter said.
In a letter responding to Inhofe and Barrasso, Sutley said the act "cannot be used to regulate greenhouse gas emissions," suggesting that the administration would not block projects simply because they would add carbon dioxide to the air.
She also said that the act had not slowed any projects from being approved under the $787-billion economic stimulus package passed last year. In the interview, Sutley said that wouldn't change even if climate considerations were included in the process.
"I don't think that we have much to fear in terms of NEPA being a barrier to getting things done," she said.
[Environment]
Scientists find details of tumors killing off Tasmanian devils
The facial cancer devastating the species is a nerve tumor that escaped its original host, and is passed from one devil to another through bites. Researchers hope the discovery will lead to a vaccine.
By Thomas H. Maugh II
January 1, 2010
The facial cancers that are devastating populations of Tasmanian devils in Australia are a nerve tumor that escaped its original host and became a parasite of the cultural icon, passing from one devil to the next by bites when the animals are fighting or mating, researchers reported Thursday.
A genetic analysis of tumors from Tasmanian devils widely separated geographically shows that all the tumors are virtually identical and distinct from the animals' own genomes, researchers in the United States and Australia reported in the journal Science. The tumors probably arose from Schwann cells, which normally play a role in protecting and cushioning nerves.
The analysis provides clues to a way to diagnose the disease early and represents a major step toward the development of a vaccine that could protect the remaining animals in the wild, said biologist Elizabeth P. Murchison of the Cold Spring Harbor Laboratory in Cold Spring Harbor, N.Y., and the Australian National University in Canberra, lead author of the paper.
Tasmania is the only natural habitat of the fox-sized creatures, the world's largest marsupial carnivore. The animals release a foul odor under stress, and they screech and scream when they feed, a behavior that led to their name. Their powerful jaws enable them to eat entire cows, including bones and fur.
But beginning more than a decade ago, biologists noticed the appearance of the facial tumors, a condition now known as devil facial tumor disease. Confined primarily to the face and jaw, the tumors prevent the animals from eating, and they can also attack internal organs. The disease, which is invariably fatal, is one of only two types of cancers in animals that are transferred from animal to animal by tumor cells. The other occurs in dogs.
The population of devils in the wild has already dropped by 60%, and experts predict that unless something is done, the tumors could force the animals into extinction in 20 to 25 years. One possibility under consideration is the construction of 3-foot-high fences across broad parts of Tasmania that would keep infected animals isolated from healthy ones.
Analyzing the genetic code of the tumors as well as the complete set of genes that are turned on or off in a cancer cell, the researchers concluded that the tumors probably arose in a Schwann cell in a single Tasmanian devil, then began spreading through the population. How and where the first tumor developed, however, is still a mystery, but the team hopes the genetic analysis may provide some insight.
The researchers also found a protein called periaxin in the tumors. This protein, which is normally found in Schwann cells, could be a marker for early stages of the disease when it's present in the animals in high levels, they speculated.
Meanwhile, they are looking for genes that might influence the pathology and transmission of the tumor in the hope that they might provide a good lead on a vaccine.
[Environment]
Federal agencies may have to consider climate before they act
The Obama administration may issue an order that would expand the National Environmental Policy Act's scope to prevent global warming. The move could open up new avenues to challenge projects.
By Jim Tankersley
January 1, 2010
Reporting from Washington - The White House is poised to order all federal agencies to evaluate any major actions they take, such as building highways or logging national forests, to determine how they would contribute to and be affected by climate change, a step long sought by environmentalists.
Environmentalists say the move would provide new incentives for the government to minimize the heat-trapping gas emissions scientists blame for global warming. Republicans have opposed it as potentially inhibiting economic growth.
The new order would expand the scope of the National Environmental Policy Act, or NEPA, a landmark statute that turns 40 today. The act already requires federal agencies to consider environmental impacts such as land use, species health and air and water quality when approving projects.
By formalizing a requirement to consider effects on climate -- a step some agencies already take -- the administration would introduce a broad new spectrum of issues to be considered. It could also open up new avenues for environmentalists to attack, delay or halt proposed government actions. The environmental impact statements originally required by the act have become routine battlegrounds for environmentalists, developers and others.
Under the order, agencies would need to account for whether such factors as predicted rises in sea levels would affect proposed new roads along shorelines; or whether, because of temperature changes and species migration, clear-cutting a patch of forest would result in new types of trees replacing the originals.
California lawmakers mandated in 2007 that state-level environmental assessments take climate change into account.
"People will think longer and harder and smarter about what they build when they understand that the environment around them is changing," said David Bookbinder, chief climate counsel for the Sierra Club. Bookbinder was one of several environmental lawyers who petitioned the White House in 2008 to formally recognize climate considerations under the act.
The head of the White House Council on Environmental Quality, Nancy Sutley, said in an interview this week that federal agencies "should think about both the effect of greenhouse gas emissions, and the effects of climate change, on decisions they make."
She added that the administration's decision was not yet final.
Business groups and many Republicans say that federal environmental reviews already hamstring economic development with red tape and they've warned that adding climate to the process would just make things worse.
"Requiring analysis of climate change impacts during the NEPA process . . . will slow our economic recovery while providing no meaningful environmental benefits," Sens. James M. Inhofe (R-Okla.) and John Barrasso (R-Wyo.), wrote in a letter to Sutley in October.
"Projects across the nation are already experiencing delays or being canceled due to inappropriate and inefficient implementation and litigation from existing environmental regulations," the letter said.
In a letter responding to Inhofe and Barrasso, Sutley said the act "cannot be used to regulate greenhouse gas emissions," suggesting that the administration would not block projects simply because they would add carbon dioxide to the air.
She also said that the act had not slowed any projects from being approved under the $787-billion economic stimulus package passed last year. In the interview, Sutley said that wouldn't change even if climate considerations were included in the process.
"I don't think that we have much to fear in terms of NEPA being a barrier to getting things done," she said.