Archive for the ‘Science’ Category

How China Wrecked Copenhagen

Wednesday, December 23rd, 2009

A very interesting story courtesy of the Australian ABC from an insider at the Copenhagan COP15 climate change talks:

He says Prime Minister Kevin Rudd and other Western leaders were visibly upset when China started “removing all the numbers that mattered” in the final talks, including emissions cuts by developed countries of 80 per cent by 2050. ‘Why can’t we even mention our own targets?’ demanded a furious [German Premier] Angela Merkel. Australia’s prime minister, Kevin Rudd, was annoyed enough to bang his microphone. Brazil’s representative too pointed out the illogicality of China’s position. Why should rich countries not announce even this unilateral cut?

Before anyone gets any thoughts that this is someone from a rich country trying to pass the buck, the person in question was Mark Lynas who was attached to the Maldives delegation, who have probably the most to loose from this. Mark has written more in an article in the UK’s Guardian newspaper, saying:

Copenhagen was a disaster. That much is agreed. But the truth about what actually happened is in danger of being lost amid the spin and inevitable mutual recriminations. The truth is this: China wrecked the talks, intentionally humiliated Barack Obama, and insisted on an awful “deal” so western leaders would walk away carrying the blame. How do I know this? Because I was in the room and saw it happen. China’s strategy was simple: block the open negotiations for two weeks, and then ensure that the closed-door deal made it look as if the west had failed the world’s poor once again. And sure enough, the aid agencies, civil society movements and environmental groups all took the bait. The failure was “the inevitable result of rich countries refusing adequately and fairly to shoulder their overwhelming responsibility”, said Christian Aid. “Rich countries have bullied developing nations,” fumed Friends of the Earth International.

It was basically gutted at their behest:

China, backed at times by India, then proceeded to take out all the numbers that mattered. A 2020 peaking year in global emissions, essential to restrain temperatures to 2C, was removed and replaced by woolly language suggesting that emissions should peak “as soon as possible”. The long-term target, of global 50% cuts by 2050, was also excised. No one else, perhaps with the exceptions of India and Saudi Arabia, wanted this to happen.

So there we go, it’s probably futile to try and get a deal in the near future, and longer than that (saving a miracle) probably means we’re stuffed.

The ensemble contained 17 model runs, and of these 13 showed a global average temperature rise of 4°C or higher by the 2080s.

My gut feeling that humans are too stupid to survive this one seems to be correct – I only wish that it wasn’t going to be at the expense of so many powerless people.

RIP Tudor Jenkins, Reader in Physics, University of Wales Aberystwyth

Saturday, November 7th, 2009

My friend Alun Jones forwarded onto me the sad news of the death of one of my former lecturers, Tudor Jenkins (here’s the archive.org link, in case the original goes away), affectionately called “Tuba Jenkins” by his students as he played the tuba for the Aberystwyth Silver Band (Seindorf Arian Aberystwyth).

Dr TUDOR E. JENKINS, MA, DPhil (Oxon), FInstP

It is with great sadness that we report the untimely death of Dr Tudor Jenkins, Reader in Physics at the Institute of Mathematics and Physics at Aberystwyth University. Dr Jenkins died on 3rd November after a short illness aged 60.

Originally from the Rhondda Fawr, Dr Jenkins read Physics at Corpus Christi College Oxford, and obtained a D.Phill at the Clarendon Laboratory, Oxford. He subsequently studied as a post-doctoral research assistant in Cardiff University before being appointed as lecture in micro electronics at St Andrews University in 1979. He joined the Department of Physics at Aberystwyth in 1983 becoming Senior Lecturer in 1990 and Reader in 2007.

A tribute by Professor Neville Greaves, Director of the Institute of Mathematics and Physics, is published on http://www.aber.ac.uk/aberonline/en/.

I remember I did his lasers course when I did my degree in Planetary and Space Physics at Aberystwyth back in the late 1980’s and whilst I wasn’t very good at that course I do remember his enthusiasm for physics and the fact he could inspire you to want to learn more. Turns out that he was recognised for that, in 2005 he won the Universities award for Teaching Excellence. This quote from the tribute also rings true to form:

Dr Tudor Jenkins was a committed and colourful colleague, famous for his often pithy Latin quotations with which he ended his e-mails. Looking forward to rationalising teaching modules for the 2009 session, he concluded wryly with Occam’s Razor: entia non sunt multiplicanda praeter necessitatem, which approximately translates as “entities must not be multiplied beyond necessity”. Tudor was always a pragmatist.

I also seem to remember that he had an enthusiasm for real ale.. ;-)

Serious SSL Renegotiation Problem

Thursday, November 5th, 2009

This just in from Ben Lawrie:

For the last 6 weeks or so, a bunch of us have been working on a really serious issue in SSL. In short, a man-in-the-middle can use SSL renegotiation to inject an arbitrary prefix into any SSL session, undetected by either end.

But wait, there’s more..

To make matters even worse, through a piece of (in retrospect) incredibly bad design, HTTP servers will, under some circumstances, replay that arbitrary prefix in a new authentication context. For example, this is what happens if you configure Apache to require client certificates for one directory but not another. Once it emerges that your request is for a protected directory, a renegotiation will occur to obtain the appropriate client certificate, and then the original request (i.e. the stuff from the bad guy) gets replayed as if it had been authenticated by the client certificate. But it hasn’t.

Ben has a patch against the current development head of OpenSSL to ban renegotiation, but for most people it’ll need backporting to their current OpenSSL versions..

MPI-3 Forum Seeks Feedback from Fortran MPI Developers

Saturday, October 24th, 2009

In a posting to the Open-MPI development list Jeff Squyres has requested feedback from Fortran MPI developers on proposed changes to the bindings of MPI functions in MPI-3. He writes:

In the MPI-3 Forum, we’re working on revamping the Fortran bindings to be “better” (for a variety of definitions of “better”). There’s at least one question that we really need some feedback from the MPI Fortran developer community before proceeding. Craig Rasmussen from Los Alamos National Laboratory, chair of the MPI-3 Fortran Working Group, asked me to post a “request for information” to my blog and pass on the URL to every Fortran MPI programmer that I know

The URL of Jeff’s blog is http://blogs.cisco.com/ciscotalk/performance/comments/mpi-3_fortran_community_feedback_needed/. Please pass this on if you do know other Fortran MPI developers.

More Global Warming Evidence

Wednesday, October 21st, 2009

Hot off the press from the University of Colorado via Futurity.org – an analysis of 200,000 years of climate evidence from a lake on Baffin Island in the arctic shows that whilst the temperature should be getting cooler due to natural effects it’s actually going the other way:

While environmental changes at the lake over the past millennia have been shown to be tightly linked with natural causes of climate change—like periodic, well-understood wobbles in Earth’s orbit—changes seen in the sediment cores since about 1950 indicate expected climate cooling is being overridden by human activity like greenhouse gas emissions.

The sediments here go way back:

The lake sediment cores go back 80,000 years beyond the oldest reliable ice cores from Greenland and capture the environmental conditions of two previous ice ages and three interglacial periods.

Anglo-Saxon Hoard Discovered in Mercia

Saturday, September 26th, 2009

A metal detectorist has discovered a hoard of precious items (now declared treasure under the Treasure Act 1996) in land that was once part of the Anglo-Saxon kingdom of Mercia in England. Archaeologists were called in and recorded around 1500 items altogether, with around half being precious metals and gems.

It looks phenomenal, and is far larger than the hoard found at the Sutton Hoo ship burials which itself was impressive enough. What is really interesting to me is that these are often fragments of larger items and even the whole items haven’t been treated with care by whoever assembled the hoard – crosses are folded up for example – indicating that it was the previous metals and gems rather than items themselves that were valued. One of the experts who examined the hoard wrote:

The material is predominantly associated with war – swords, sword fittings, bits of helmets and the like – but all the precious metalwork has been stripped. That means they’re not treasuring the objects as wholes, they’re taking the precious metals off and keeping them.

Basically it looks like the collector of this was an Anglo-Saxon magpie, on a massive scale! :-)

I’m glad to see that this is a case where the Treasure Act and the Portable Antiquities Scheme worked out really well; the find was reported immediately allowing archaeologists to excavate the items in situ and record all the vital information that lets us put these items into the wider context which is otherwise lost if these things are just ripped out of the ground and disappear into a private collection or onto the black market. All too often we are losing that valuable information about our past forever when that happens. So big props to the finder and the landowner for doing the right thing (not to mention they’re up for a massive reward, which is also the right thing to do).

UK Government Apologises to Alan Turing

Sunday, September 13th, 2009

55 years after Alan Turing, one of the fathers of modern computing and one of the intellectual powerhouses behind the achievements of Bletchley Park, committed suicide following his conviction for “gross indecency” for being gay and his subsequent exile from GCHQ the UK Prime Minister has apologised for his treatment.

Turing was a quite brilliant mathematician, most famous for his work on breaking the German Enigma codes. It is no exaggeration to say that, without his outstanding contribution, the history of World War Two could well have been very different. He truly was one of those individuals we can point to whose unique contribution helped to turn the tide of war. The debt of gratitude he is owed makes it all the more horrifying, therefore, that he was treated so inhumanely. In 1952, he was convicted of ‘gross indecency’ – in effect, tried for being gay. His sentence – and he was faced with the miserable choice of this or prison – was chemical castration by a series of injections of female hormones. He took his own life just two years later. [...] we’re sorry, you deserved so much better.

The BBC has a good article on Turing, his persecution and the apology.

Alan, we all owe you a massive debt of gratitude for all your work and I’m very sorry the UK treated you so very cruelly. We cannot right those wrongs, all we can hope to do is to learn from them and try to not let them be repeated.

(Heard via an InsideHPC blog)

Reflections On Apollo

Tuesday, July 21st, 2009

A video screen telecasting Buzz Aldrin reflected in the helmet of a spacesuit in Washington (ABC News) It’s been 40 years since Apollo 11, something that I’ve known about for as long as I can remember as I was born not that long before it and, apparently, screamed all the way through the landing televised at the hospital. Sorry about that! :-)

The fact that the Apollo programme ended so soon after Apollo 11 (Apollo 17 was the last mission, and the only one to carry a scientist, geologist Harrison Schmitt) was already foreshadowed in budget cuts in 1967, which to me seems a great shame given the fact that we were for the first time looking at leaving the cradle of the earth – something that humanity will have to do eventually before the sun dies (assuming we can survive the current issues facing us). I wonder what we would have found on the lunar surface if further Apollo missions had taken more scientists to the moon ? Would we have already explored the craters nearer the poles where we now look for water ice ? Would we have have a permanent base there ? Few people know that NASA had already planned, prior to Armstrong, Aldrin and Collins, longer stays, a lunar flyer to let astronauts visit other areas on the surface and even a base on the moon as part of the Apollo Applications Program, though sadly only Skylab survived the axe to make it into space.

After Apollo 17 it took another 6 years for NASA to get back into space with STS-1, the first shuttle space flight, and we’ve still not been out of earth orbit since 1972, 37 years ago. It would be tragic if we ended up like the original settlers of Easter Island who used up all the resources needed for long distance travel and effectively stranded themselves.

Apollo From Orbit – Images from LRO

Saturday, July 18th, 2009

NASA’s Lunar Reconnaissance Orbiter (LRO) has returned some initial images from a number of the Apollo landing sites on the moons surface, namely Apollo 11, 14, 15, 16 & 17. My favourite has to be the Apollo 14 image which includes the trails of the astronauts footprints from the LM to a set of scientific instruments.

Apollo 14 landing site taken by LRO

In case you can’t spot the details, here’s the annotated image.

Annoted image of Apollo 14 landing site image by LRO

Don’t forget these images were taken during the commissioning phase of LRO whilst it is in a highly elliptical orbit, NASA believe that once its in its science orbit (roughly 50 miles altitude above the lunar service) the resolution will by around four times greater!

(Via Emily Lakdawalla)

Send Your Name to Mars on the MSL Rover

Thursday, July 16th, 2009

NASA are soliciting for peoples names to go to Mars on the Mars Science Laboratory (MSL) rover called “Curiosity“.

I’ve just added mine, go and add yours!

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Australia.