GREECE SOLIDARITY CAMPAIGN'S SYRIZA RALLY

A rally celebrating the stunning victory of Syriza in the Greek general election was held on Wednesday 28 January at the TUC Congress House in London, attended by supporters of the Greece Solidarity Campaign and Syriza members from Athens. 

The new Syriza government has already taken urgent action to remove some of the worst injustices inflicted on the Greek people by Austerity policies.

SELLAFIELD NUCLEAR CLEAN-UP CONTRACT LOST

Private consortium Nuclear Management Partners (NMP) will be stripped of the £9bn contract to clean-up the nuclear waste site at Sellafield, the biggest and most complex nuclear site in Europe:

http://www.bbc.co.uk/news/business-30785623

NMP has run the site for more than six years. The private consortium has been heavily criticised; both the Public Accounts Committee and the National Audit Office have accused NMP of overruns and delays. NMP's contract was extended for a further five years in 2013.

The Nuclear Decommissioning Authority (NDA),  which awarded the contract, last year increased its estimate for cleaning up the UK's nuclear sites by 7% to £110bn over the next 120 years. The vast bulk of that relates to Sellafield.

Comment: This debacle illustrates the enormous costs, the timescale disappearing into the distant future, and the short-term profiteering of private consortia involved in the clean-up of the waste from nuclear power.

ROSETTA DATA HINTS AT COMET FORMATION

New pictures from the Rosetta probe of the surface of Comet 67P reveal a lumpy texture in places that researchers speculate could have been the comet's original building blocks.
http://bbc.co.uk/news/science-environment-30931445

Cameras on Rosetta have now imaged 70% of the comet's surface. The unseen fraction, in the southern hemisphere, will be mapped as it emerges from the darkness of winter. The research team has defined 19 regions on the comet, giving each the name of an ancient Egyptian deity.

A striking occurrence is a kind of 'fluidisation' effect that acts to smooth some surfaces. Scientists think this occurs when ices change their structure. The change in phase results in a release of gas that can pick up local dust and make it move briefly like a fluid. Something similar is seen on Earth when large volumes of hot ash tumble down the sides of volcanoes.

It is obvious now that this comet is not a large lump of ice with some dust mixed in. It has a much more complex construction. incorporating significantly more dust and may rocky components. This is very evident from all those craggy cliff features where stiff, consolidated materials seem to dominate.

Simon Green of the Open University said: 'We used to think of comets as 'dirty snowballs'; we now think 'icy dirt-ball' is a much better description.. That's the way 67P looks - a solid object with ice vaporising from somewhere below the surface.'

Comment: It's clear from these latest published research findings that Rosetta is making important and exciting contributions to cometary science.

FALLOWFIELD  in Winter

The River Lea meanders through Fallowfield yesterday on a frosty, sunny January day. The most natural, unspoilt and hidden riverside site in Luton, now a County Wildlife Site. A clump of Reed Mace in Boggy Mead, one of the three ancient fields here.

Comment: Fallowfield is on the flood plain of the River Lea, hence this urban site is undeveloped and preserves three ancient fields:  River Close, Boggy Mead and Catch's Close, within just a mile or so of Luton town centre.

WINTER SUN

Luton in the winter sun, two days ago along Cats Brook in Limbury. The little brook rises in Luton about a half mile away, and flows nearby into the River Lea. Haunt of Kingfishers, Herons, Little Egrets, and Minnows.

JOHN CLARE:      A WINTER WISH

My wish nows to sit in a cottage made snug

By a fire burning roozy and bright
With a Friend to make shorter short days by a Jug
And some Books for amusement at night
And could I enjoy such a peaceable lot
I'd ne'er cast on Fortune a frown
Nor would I possesing my Friend, Books, and Cott
Exchange 'em away for a — Crown!

 

(with thanks to Roger Arborfield)

 

Comment:  John Clare (1793 - 1864)  Foremost rural poet of the English Language. 

CURIOSITY FINDS METHANE AND ORGANIC COMPOUNDS ON MARS

Mars Curiosity rover has detected methane on Mars, and has also found organic compounds in rock samples., hints of past or present life on Mars:
http://www.bbc.co.uk/news/science-environment-30456664

The source of the methane cannot be identified. Curiosity scientist Professor Sushil Atreya of the University of Michigan said 'It's possible that clathrates are involved. These are molecular cages of water-ice in which the methane gas is trapped. From time to time, these could be destabilised, perhaps by some mechanical or thermal stress, and the methane gas would be released to find its way up through cracks or fissures in the rock to enter the atmosphere.'

The methane could have got into the clathrate stores from Martian bugs, but it could also have come from a natural process which produces methane when water interacts with certain types of rocks. One way to investigate whether the Martian methane has a biological or geological origin would be to study the ratio of carbon-12 to carbon-13 in the gas, and compare it to figures on Earth. A high ratio would indicate a biological origin. The methane volumes found so far on Mars are insufficient for this type of experiment.

The methane detection by Curiosity confirms the presence of methane that is also observed by orbiting spacecraft at Mars, and by telescopes on Earth, but which earlier could not be found by Curiosity.

Curiosity has also detected organic compounds, chlorobenzene, in the rocks it has been drilling. This is the first detection of organics in surface materials on Mars. It's not certain whether the organic material was actually present in the original rock, or was a produced during the analysis heating process.

Comment:  The importance of these findings is that life as we know it can only exist in the presence of complex carbon structures. We may still be far from proving that life existed on Mars, but these are significant steps in the right direction.

MARS OPPORTUNITY ROVER HAS MEMORY PROBLEM

The Mars Opportunity rover has covered 26 miles since it landed on the Martian surface ten years ago. During that time it has gathered and sent back vital data. However, recent reports from Nasa indicate that Opportunity has developed a problem with the memory of its on-board computer:
http://www.bbc.co.uk/news/technology-30642548

Project manager John Callas explained that when Opportunity tries to save telemetry data to its flash memory (equivalent to a computer's hard drive) it fails, so it then writes it to the volatile memory (like a computer's RAM) instead, which gets wiped when the rover powers down. The problem has become more severe, with Opportunity resetting itself, and sometimes stopping communication with mission control altogether.

A solution is being attempted so the rover software ignores the faulty part of the flash memory, and writes instead permanently to the healthy hardware.

Comments: It will be several weeks before it is known if this works and solves the memory loss problem.