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Not so long ago polar bears were to have diverged as a distinct species from brown bears just 130,000 years ago or so. That got pushed to about 600,000 years by more fossil and gene study. The latest: for more than FOUR MILLION YEARS their genome has been largely distinct from their close, landlubber relatives. But...

Not so long ago polar bears were to have diverged as a distinct species from brown bears just 130,000 years ago or so. That got pushed to about 600,000 years by more fossil and gene study. The latest: for more than FOUR MILLION YEARS their genome has been largely distinct from their close, landlubber relatives. But some cross-species mating recurred over that time, presumably mainly during warm periods that brought polar bears to dry land as ice floes ebbed, and drew brown bears range northward.

That's the news in the Proceedings of the Nat'l Academy of Science. The paper has 26 authors from Penn State U. , USGS, Univ. at Buffalo, and institutes in Norway, Iceland, Denmark, China, and Canada. The paper says it's not yet possible to say how long ice-adapted Arctic bears resembled the white giants of today, but the gene pool that led to them seems to have a long and largely distinct history.

Give the interest in the immediate future of polar bears during the...

AP : Fracking a radiation hazard? Cause of breast cancer? No. But some critics say so.
Charlie Petit
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People who follow the fracking policy battles closely may be able to tick off the technology's primary environmental and public safety drawbacks: It may cause minor earthquakes, in a few cases the hydraulic fluids used to fracture deep formations may get into local groundwater or streams, it may strain local...

People who follow the fracking policy battles closely may be able to tick off the technology's primary environmental and public safety drawbacks: It may cause minor earthquakes, in a few cases the hydraulic fluids used to fracture deep formations may get into local groundwater or streams, it may strain local water supplies by diverting some of them into fracking duty. And, long term, replacing coal with natural gas may be a move in the right direction but it is nothing to stick with for a long tine - it inherently maintains significant greenhouse gas emission at a worrisome if lower rate.

Such things as that seem, from here, fair game for opponents to exploit. they provide fertile enough reason for reporters to be alert to exaggerations by partisans pro, con, and sideways.

However, at the AP this week reporter Kevin Begos...

NY Times :Science Times (and more) : Baked Alaska slumps; The Pioneers are not defying regular gravity ; Coral saviors
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Cornelia Dean has front and center a terrific story of daring engineering, wartime fears, remote wilderness, and to justify its place in ScienceTimes, climate change. The famed Alcan Highway from southern-ish Canada to Fairbanks, Alaska has gone in the last half century from treacherous gravel road...

Cornelia Dean has front and center a terrific story of daring engineering, wartime fears, remote wilderness, and to justify its place in ScienceTimes, climate change. The famed Alcan Highway from southern-ish Canada to Fairbanks, Alaska has gone in the last half century from treacherous gravel road to smooth pavement suitable for travel trailers, but now its engineers face a new challenge. The permafrost on which much of it was built is melting in many places. Sunlight on dark asphalt is one reason, a warming climate another. This is a story of adaptation: that of the original engineers who had to devise construction methods on the fly, and of adaptation today to the softening ground. Dean packs so much info in here that it reads like the pitch for a book on the Alaska Highway. I'd read it.

Other headlines to note:

  • Denise Grady :...
Raleigh News & Observer: World's "largest chunk of granite" gets a geologist-rock climber's close attention
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Yesterday's News & Observer got from its staffer Kerstin Nordstrom an engrossing tale of technical climbing and geological...

Yesterday's News & Observer got from its staffer Kerstin Nordstrom an engrossing tale of technical climbing and geological mystery that is playing out in one of the nation's foremost national parks. The story is also hobbled by some over-simplifications and errors, but not enough to cipple it.

The news is that a UNC grad student and his professor are taking advantage of the former's technical climbing skills to painstakingly sample the sheer granite monolith that is El Capitan, a 3000-foot-+ monster of almost vertical walls in Yosemite Valley. Visitors often put binoculars on the thing and are surprised and sometime terrified-by-imagining-themselve-there when they see people climbing slowly toward the top, hanging on ropes and spending nights sleeping on a ledge or even...

LA Times: Our big problem that science can explain but that politicians hardly touch? It's not climate change.
Charlie Petit
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We've all had conversations with fellow members of the chattering classes, chewing on this or that dismal development, when somebody says something to which all nod yes, and move on. They mention the O-word. That's right, overpopulation.

I am in Los Angeles helping out with an expected but...

We've all had conversations with fellow members of the chattering classes, chewing on this or that dismal development, when somebody says something to which all nod yes, and move on. They mention the O-word. That's right, overpopulation.

I am in Los Angeles helping out with an expected but regrettable family emergency having to do with life span. It seemed appropriate somehow yesterday when I read the front page of the the LA Times, followed the lead story's jump, and found myself staring at some amazing graphics and a throbbing beat of statistics. The story continues for five pages inside! And that was only the first of five parts running, I presume, this week in hte printed editions. Even with huge pics, that is a lot of text. The chief stat that hit home with me is how many of us there are compared to ancient history (when I was born there were about 2.5 billion living people. Now it's about 7 billion plus, climbing fast) and the consequences should things...

It looked like a tornado from some angles, felt a little like one, but it was not. It was a downburst preceded by a gust front. It was also not to be confused with a derecho or microburst but one thing nobody would deny: it was one violent, roof-removing, tree-toppling wind storm.

A staple for many small and...

It looked like a tornado from some angles, felt a little like one, but it was not. It was a downburst preceded by a gust front. It was also not to be confused with a derecho or microburst but one thing nobody would deny: it was one violent, roof-removing, tree-toppling wind storm.

A staple for many small and regional press outlets has always been columns by nearby hobbyists or academics. An account in the July 20 edition of North Country Now, a small pub in upstate New York, is a sparkling example of how, every once in awhile, bringing on a public-spirited professor to write a column on nature or whatever can pay off big. Aileen O'Donoghue - astrophysicists, radio astronomer, and associate professor of physics at St. Lawrence University - explains in polished and confident...

Two recent, sober analyses of extreme events on the landscape - one on widespread US drought and the other on recent and ferocious wildfires in and  around the Rockies - offer lessons for any journalist covering such things.

  • Columbia Journalism Review/The Observatory - Tom Yulsman...

Two recent, sober analyses of extreme events on the landscape - one on widespread US drought and the other on recent and ferocious wildfires in and  around the Rockies - offer lessons for any journalist covering such things.

  • Columbia Journalism Review/The Observatory - Tom Yulsman: Flames, Cause, and Context ; This is a link-filled roundup of stories on the fires consuming woodlands, forests, and prairie in western US. He moves expeditiously through the big picture and writes, "..as one fire after another seemed to pop up in the parched and sun-baked region in June and early July, reporters, bloggers and opinion writers began trying to move the story beyond the details of breaking news to causes and context. There was much to discuss."The column's strength is to zero in on how disparate coverage...

In the Mercury-News Paul Rogers has placed a story that can only exemplify what operators of the Monterey Bay Aquarium Research Institute, or MBARI, can regard as good press. It's a...

In the Mercury-News Paul Rogers has placed a story that can only exemplify what operators of the Monterey Bay Aquarium Research Institute, or MBARI, can regard as good press. It's a staple sort of story for regional press, about an institution founded by a local, wealthy, famous late person and kept going by the family. But Rogers has the advantage of writing about a place that, unless I am terribly mistaken, deserves good press. The founder is David Packard, tech-pioneer of the Hewlett-Packard electronics industrial edifice in Silicon Valley. The prime family member who keeps nourishing the better-known Monterey Bay Aquarium - of which she is exec. dir. - and its science sibling MBARI is his daughter Julie.

For its 25th anniversary the place is having an open house. Rogers goes beyond saying that it's a nifty opportunity to get behind the...

Yesterday we ran a post on two UK stories that included...

Yesterday we ran a post on two UK stories that included one report, in the Guardian and prompted by a Nature-published study, on the fate of algae and other plankton that bloom in the sea when fertilized by iron. The gist is that a research team ran its test to a well-defined ocean eddy and were thus able to see what happens to the organic, carbon-rich material in the bloom in relative isolation from surrounding waters. They report that a large share of the blooms eventually sank deep, perhaps to sediments. Thus prospects increase that some atmospheric carbon can be diverted to the sea floor in a form that will stay there, relatively...

via SanDiegoSpaceSociety, http://bit.ly/Q7Li7P, Where volunteers are surely ready for a Mars Trip.

A glance at the AP's science feed this...

via SanDiegoSpaceSociety, http://bit.ly/Q7Li7P, Where volunteers are surely ready for a Mars Trip.

A glance at the AP's science feed this morning revealed what I thought said this, by Ramit Plushnick-Masti: NASA builds menu for planned Mars missions in 2030s. Ah, thought I, NASA believes the budget straight jacket will eventually unbelt itself and a new round of science missions will continue the tradition of the Viking landers, of the Spirit and Opportunity cuties, and the enroute Curiosity rover. One imagines sample returns, mountain and cliff climbing bots, automated drill rigs pulling deep core samples, and dirigibles able to stay aloft...

Guardian, DailyMail Online: From different newspaper traditions, two good stories (ocean sequestration and UK climate)
Charlie Petit
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Two UK newspapers of widely different reputations turned out high-grade stories that happened to pass the tracker's radar this morning (most of which was spent clearing out emails after spending a four days in a remote and lofty drainage in the eastern High Sierra, much of it chasing grandchildren to unhook...

Two UK newspapers of widely different reputations turned out high-grade stories that happened to pass the tracker's radar this morning (most of which was spent clearing out emails after spending a four days in a remote and lofty drainage in the eastern High Sierra, much of it chasing grandchildren to unhook their quarry - brook trout, or 'brookies.' Also to unsnarl their spinning reels. Hmm. Why are they called spinning reels? Their main point is that their reels, more properly their spools, don't spin!).

1) Good News, Sort of, for ocean carbon sequestration:

Baltimore Sun: Hot Summer? Thirsty? Wait'll we use up our ancient, coastal aquifers
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The Sun's science reporter Scott Dance, on the job there for about six months following work at the Baltimore Business Journal, put a longer perspective on Maryland's effort to grapple with climate and weather changes: a possible looming water woe.

In Sunday's edition he reported on problems hiding in plain sight - especially to hydrologists with an interest in the state's literal (and in this case littoral) plain. It is not a scoop. A USGS press release a month ago called attention to the essential news. A few outlets wrote it then. But last out, best dressed. Dance moves the ball forward with some investigative digging into what if anything public agencies - ones that have long known about the water and geology issues the state faces -  are doing about them...

Charlie Petit
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illus -  Emiliano Bellini

I'm doing this post in stages, on two boluses of complementary news. The first earlyish in the morning to round up some news, off a paper in Nature being released this week even though it won't be printed for awhile, on how many distinct waves of Old World migrants reached North America in olden times. That's way before Vikings or China Treasure Ships or Columbus or anybody else arrived here to find it already well settled (not...

Yes, we done it. At least, some...

Yes, we done it. At least, some of it. Scientists at the National Oceanic and Atmospheric Administration, UK's Met Office, and elsewhere have a package of reports in the Bulletin of the American Meteorological Association that, news reports say, add up to a nos culpa, which means I think same as a collective mea culpa. The package includes NOAA's annual report on such things, this edition being the State of the Climate 2011. Some droughts, storm onslaughts and other weather strangeness can be attributed, via one or two sigmas worth of confidence,  to the cumulative effects of greenhouse gases and other human forcings on climate.

This is getting considerable attention even in a media world that is...

Charlie Petit
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Fans of a new,...

Fans of a new, cheaper space age led by private money making private profits with private rockets will enjoy two stories that the BBC's Jonathan Amos found during the runup to the annual Farnborough Air Show - on the outskirts of greater London's southwest side -  that hits its peak this weekend.

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