Tag: science

A microscopic algae-eater that lives in a Norway lake has now been identified as one of the Earth’s oldest living organisms.

8:59 am

A microscopic algae-eater that lives in a Norway lake has now been identified as one of the Earth’s oldest living organisms.

The elusive, single-cell creature evolved about a billion years ago and did not fit in any of the known categories of living organisms – it was not an animal, plant, parasite, fungus or alga, they say.

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More problems for Dark Matter

9:29 am

Vast Polar Structure

A new study by astronomers has found a vast structure of satellite galaxies and star clusters aligned perpendicular to the Milky Way and extending outward above and below the galaxy’s nucleus by as much as a million light years.

In their effort to understand exactly what surrounds our Galaxy, the scientists used a range of sources from twentieth century photographic plates to images from the robotic telescope of the Sloan Deep Sky Survey. Using all these data they assembled a picture that includes bright ‘classical’ satellite galaxies, more recently detected fainter satellites and the younger globular clusters.

“Once we had completed our analysis, a new picture of our cosmic neighbourhood emerged”, says Pawlowski. The astronomers found that all the different objects are distributed in a plane at right angles to the galactic disk. The newly-discovered structure is huge, extending from as close as 33,000 light years to as far away as one million light years from the centre of the Galaxy.

An animation illustrating this galactic distribution is posted below the fold. You can read the actual preprint paper here.

The problem with this polar alignment with the Milky Way’s core is that the theories for explaining the distribution of dark matter do not predict it.
» Read more

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Cryosat has released its first seasonal variation map, tracking the growth of the Arctic icecap for the winter of 2010-2011.

11:20 am

Cryosat has released its first seasonal variation map, tracking the growth of the Arctic icecap for the winter of 2010-2011.

The video at the link is quite interesting to watch. Note however that the press information says nothing about whether the icecap was larger or smaller than expected, something that probably is not surprising. It will probably take decades of further work to get the true context of these results.

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The global warming advocate who invented the concept of “Gaia” now admits he was wrong about global warming.

8:42 am

The global warming advocate who invented the concept of “Gaia” now admits he was wrong about global warming.

“The problem is we don’t know what the climate is doing. We thought we knew 20 years ago. That led to some alarmist books – mine included – because it looked clear-cut, but it hasn’t happened,” Lovelock said. “The climate is doing its usual tricks. There’s nothing much really happening yet. We were supposed to be halfway toward a frying world now,” he said.

“The world has not warmed up very much since the millennium. Twelve years is a reasonable time… it (the temperature) has stayed almost constant, whereas it should have been rising — carbon dioxide is rising, no question about that,” he added.

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Data now suggests that the bats are showing signs of recovery in the first caves hit by white nose syndrome in New York.

5:39 pm

Good news: Data now suggests that the bats are showing signs of recovery in the first caves hit by white nose syndrome in New York. More here. Plus here’s a link describing some of the research being done on this subject.

Note that the death toll listed in these stories is nothing more than an arbitrary exaggeration by government officials. The National Speleological Society estimates that the numbers are probably far less, and based on my own caving experience, I agree.

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It’s not just a good idea, it’s the law!

8:59 am

Mexico has passed its own very strict climate change law.

The new law contains many sweeping provisions to mitigate climate change, including a mandate to reduce emissions of carbon dioxide by 30% below business-as-usual levels by 2020, and by 50% below 2000 levels by 2050. Furthermore, it stipulates that 35% of the country’s energy should come from renewable sources by 2024, and requires mandatory emissions reporting by the country’s largest polluters.

Some predictions:
» Read more

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New data from a neutrino telescope in Antarctica had found that cosmic rays don’t come from gamma ray bursts, as had been believed by astronomers.

9:43 pm

The uncertainty of science: New data from a neutrino telescope in Antarctica has found that cosmic rays don’t come from gamma ray bursts, as had been believed by astronomers. You can read the paper here. [pdf]

Which means that astronomers at this moment have no idea what produces these high energy cosmic rays.

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Dark matter disappears

9:15 am

The uncertainty of science: A new study has found no evidence of dark matter within 13,000 light years of the Sun, something that had not been expected.

According to widely accepted theories, the solar neighborhood was expected to be filled with dark matter, a mysterious invisible substance that can only be detected indirectly by the gravitational force it exerts. But a new study by a team of astronomers in Chile has found that these theories just do not fit the observational facts. This may mean that attempts to directly detect dark matter particles on Earth are unlikely to be successful.

These findings will be as controversial as the now abandoned faster-than-light neutrino results last fall. Here, however, the new data is likely going to be more robust, which will cause the entire astrophysical community some real conniptions.
» Read more

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Researchers have found that they cannot reproduce the results of 89 percent of 53 “landmark” cancer research papers.

12:05 pm

More bad news for peer-reviewed science: Researchers have found that they cannot reproduce the results for almost ninety percent of the fifty-three “landmark” cancer research papers they reviewed.

It is worse than you think. Consider this quote:

Part way through his project to reproduce promising studies, Begley met for breakfast at a cancer conference with the lead scientist of one of the problematic studies. “We went through the paper line by line, figure by figure,” said Begley. “I explained that we re-did their experiment 50 times and never got their result. He said they’d done it six times and got this result once, but put it in the paper because it made the best story. It’s very disillusioning.”

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Satellite photos have revealed that there are twice as many emperor penguins in Antarctica than scientists had predicted.

10:29 am

The uncertainty of science: Satellite photos have revealed that there are twice as many emperor penguins in Antarctica than scientists had predicted.

Not surprising in this era of spin-generated science, every article I’ve seen on this story (here’s another) has felt obliged to say how this news means the poor penguins will start off stronger when global warming arrives to decimate their population. However, wasn’t global warming already happening? And wasn’t that warming supposed to have decimated their population already?

The truth is we really don’t know. This new data could actually mean that emperor penguins like global warming. It could suggest that global warming hasn’t started yet. It could even be evidence that the climate isn’t warming at all.

But no, let’s just spin it in one direction: global warming is happening, and it will kill penguins. No matter how many penguins we find.

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Europe’s primary Earth-observation satellite has gone silent.

9:15 am

Europe’s primary Earth-observation satellite, Envisat, has gone silent.

Launched in 2002, the satellite is billed as the most sophisticated environmental monitor in orbit, with ten instruments providing streams of valuable data on everything from ozone, clouds and greenhouse gases to land-use trends and sea-surface temperatures — data that have figured in more than 2,000 scientific publications, ESA says. Over the years, Envisat has also offered a unique vantage point on major environmental disasters such as the December 2004 earthquake and tsunami in southeast Asia and the Deepwater Horizon oil spill in the Gulf of Mexico in 2010. Now, scientists fear that the satellite’s decade-long run has come to an abrupt end.

Problems began on 8 April when the satellite’s signal cut out as it was passing over a ground station in Sweden. ESA has been working with a team of scientists and engineers to diagnose the problem and to re-establish contact, but the outlook remains unclear.

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Astronomers have identified two of the oldest known stars, about 12 billion years old, both only a hundred light years away.

4:19 pm

Astronomers have identified two of the oldest known stars, about 12 billion years old, both only a hundred light years away.

What is intriguing about this discovery is that these two white dwarfs had to have formed very soon after the Big Bang, long before the Milky Way galaxy existed as we know it today. How they ended up here is an interesting puzzle.

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