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12,693 articles from Guardian Unlimited Science
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- February 6, 2012 (21:30)
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MONDAY 6. FEBRUARY, 2012
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21:30
The right's stupidity spreads, enabled by a too-polite left | George Monbiot
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21:00
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21:00
The mating call of an extinct bush-cricket has been reconstructed, using the microscopic wing features of a fossil
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19:30
Sampling the waters of Lake Vostok could reveal clues about evolution and reveal unknown forms of life
Russian scientists have drilled into an Antarctic lake that has been sealed off from the rest of the world for about 15 million years. Sampling the waters of Lake Vostok could reveal clues about the evolution of life on Earth and may yield entirely unknown forms of life.
According to the Russian newswire RIA Novosti, scientists from Russia's Arctic and Antarctic Research Institute in St Petersburg drilled through the 3,768 metres of ice above Lake Vostok to reach the surface of the lake on Sunday.
Lake Vostok is the largest of hundreds of lakes that sit under the thick layer of ice on the Antarctic continent. Russian scientists had been planning to drill through the ice to the lake for several decades, but the scheme was only recently approved by the relevant international bodies. Their drilling started in the first few days of this year.
In recent decades, scientists have found bacteria and other single-celled organisms that have evolved to live in conditions in which other life forms would struggle to survive, such as darkness or extreme temperatures or salinity. The scientists believe that Lake Vostok might be a haven for so-called "extremophiles". They want to take samples of the water to examine any such creatures, which will have lived in frigid waters for millions of years and followed a distinct evolutionary path to that of the rest of life on Earth.
Even though the Russian team has made it through the ice this week, it will not be able to take samples of the Vostock water until later in the year, when the Antarctic winter is over.
British scientists are also engaged in a project to drill to a sub-glacial lake on Antarctica. Researchers from the British Antarctic Survey will use a hot-water drill to cut through the ice cap to Lake Ellsworth, on the western Antarctic ice sheet, later this year. The team installed its equipment in November last year and will begin drilling in the weeks before Christmas.
guardian.co.uk © 2012 Guardian News and Media Limited or its affiliated companies. All rights reserved. | Use of this content is subject to our Terms & Conditions | More Feeds
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17:30
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17:30
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15:05
This week, we're focusing on some pivotal stories from the history of science and medicine.
First up are human-to-human transplants and intensive care medicine. These are among the greatest successes of post-war medicine, but they also raise some of the most profound ethical questions. Ahead of a discussion at the Royal Institution in London, Kevin Fong, an anaesthetist and physiology lecturer at University College London, and medical historian Richard Barnett came into the studio to discuss how these important medical interventions started and, crucially, where they are heading.
"From iron lungs to intensive care" will be held at the Royal Institution on 28 February.
The Observer's science editor, Robin McKie, was on hand to delve into the secrets of the Piltdown Hoax of 1912. The discovery that the Piltdown Man remains were not all they seemed rocked the scientific establishment of the time, and now a new generation of researchers wants to find out the truth. Who was behind the hoax?
And finally … with Nature and Science voluntarily suspending their publication of studies into bird flu, we ask: should scientific research ever be censored?
Subscribe for free via iTunes to ensure every episode gets delivered. (Here is the non-iTunes URL feed).
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Email scienceweeklypodcast@gmail.com.
Guardian Science is now on Facebook. You can also join our Science Weekly Facebook group.
We're always here when you need us. Listen back through our archive.
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13:36
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12:35
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11:18
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09:00
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SUNDAY 5. FEBRUARY, 2012
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19:03
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SATURDAY 4. FEBRUARY, 2012
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19:30
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10:00
Just in time for our Caturday morning video smile, an astronomy video about cats
Here's an astronomy video about cats, just in time for our Caturday morning video smile! This video is a chat with (a man whose name will delight birdwatchers everywhere) Brant Widgeon, who is an Astronomical Image Enhancement Engineer. He's the guy who takes x-ray images of galaxies and other celestial formations and colour enhances them so they are transformed into gorgeous screensavers for your computers. I know this will shock you, but Mr Widgeon's job is actually quite challenging.
As you will see in this video, one of the most technically challenging parts of Mr Widgeon's job is dealing with ... you got it ... space cats:
Visit AndyFreeberg's YouTube channel [video link].
"Hello? I trust you and I love you."
NOTE: the silly cat/pet/animal videos shared here on Saturday (Caturday) mornings are intended to amuse. This feature is intended to help hard-working and stressed-out people shed their professional façade so they can be better friends, companions, parents, family members and drinking pals to those in their personal lives. Any relationship between these videos and science or any scientific principle is sweet when I manage to present a solid connection to you, but is random, mostly unintended and usually coincidental.
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twitter: @GrrlScientist
facebook: grrlscientist
evil google+: grrlscientist
email: grrlscientist@gmail.comguardian.co.uk © 2012 Guardian News and Media Limited or its affiliated companies. All rights reserved. | Use of this content is subject to our Terms & Conditions | More Feeds
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01:43
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00:11
One of the best discussions I've had in the comments on this blog was about entropy, and it took us from black holes to a cup of tea. This excellent video completes the journey, and then some.
Entropy always increases, and this is the most obvious way of telling which way time is running. It's known as the second law of thermodynamics. It's fascinating, to the extent that the discussion about a cup of tea at the end of this blog about black holes and fuzzballs was as least as interesting as the seminar which inspired the article in the first place.
If you share my fascination, I recommend this video on time and entropy, which was I pointed to on twitter by Sean Carroll.
As they say in the film, electromagnetism and gravity are symmetric under a change of time direction - they work just the same backwards and forwards. The film doesn't mention it, but there are some weird corners of physics that are not symmetric under change of time direction. The weak nuclear force breaks this symmetry. This is connected with why there is more matter than antimatter around, and is something LHCb is studying at CERN, for example. But it doesn't seem to be connected with the "arrow of time" we get from entropy, at least as far as we know.
I'm reading "The Man in a the High Castle" by Philip K Dick right now. The most memorable image I have of entropy comes from his book "Do Androids Dream of Electric Sheep" (from which Bladerunner was made), where he uses the term "kipple" to describe the junk which tends overwhelm us unless we fight it. The run-down city-scapes, filmed so well in Bladerunner, are full of it. So are most of the drawers in my house. It's not my fault, it's physics.
guardian.co.uk © 2012 Guardian News and Media Limited or its affiliated companies. All rights reserved. | Use of this content is subject to our Terms & Conditions | More Feeds
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