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VIDEO: Pobol y Cwm celebrates 40 years

BBC test - Wed, 2014-10-15 10:07
Hywel Griffith visits the set of Welsh soap opera Pobol y Cwm, as it celebrates 40 years on air.
Categories: General

VIDEO: Crackdown on scam mail fraudsters

BBC test - Wed, 2014-10-15 09:22
More £100,000 has been returned to victims of postal scams thanks to a special initiative between National Trading Standards and the Royal Mail.
Categories: General

VIDEO: Football ticket prices on the rise

BBC test - Wed, 2014-10-15 07:50
Ticket prices for some English football games have risen at almost twice the rate of the cost of living, according to BBC Sport's Price of Football study.
Categories: General

VIDEO: Charities warn over child poverty

BBC test - Wed, 2014-10-15 07:47
Two thirds of children classed as poor in the UK actually come from working families, according to a coalition of charities known as The Campaign to End Child Poverty.
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Conflict and Collisions: New Contemporary Sculpture at the Hepworth Wakefield

24 Hour Museum - Wed, 2014-10-15 00:00
Kirstie Brewer sees war-themed works by Toby Ziegler, replica B-52 bombers by Alexandra Bircken and Folkert de Jong’s site-specific take on the armour of Henry VIII.
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In Pictures: Rembrandt blockbuster sees out the year at the National Gallery

24 Hour Museum - Wed, 2014-10-15 00:00
Limber up for one of the best painting exhibitions of the year with ten of the best from the National Gallery's blockbusting Rembrandt: The Late Years.
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VIDEO: 'I was screened for Ebola at Heathrow'

BBC test - Tue, 2014-10-14 23:12
Documentary maker Clive Patterson was one of the people screened for Ebola at Heathrow as screening measures came into force.
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VIDEO: Heathrow begins Ebola screening

BBC test - Tue, 2014-10-14 22:33
Passengers arriving at Heathrow airport from Ebola-affected countries have been screened by health officials.
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VIDEO: Apology to children at risk of abuse

BBC test - Tue, 2014-10-14 22:23
The Head of the National Crime Agency has apologised over the way his organisation handled information about alleged paedophiles.
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VIDEO: 'Goldilocks' burglar found in house

BBC test - Tue, 2014-10-14 19:09
A couple from Lancashire return from their holiday to discover a burglar fast asleep in their bed.
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AUDIO: Kids 'pick up' adults' driving habits

BBC test - Tue, 2014-10-14 13:48
Parents pass on bad driving habits years before children get behind the wheel, a driving expert claims.
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VIDEO: Unseen Titanic images go on show

BBC test - Tue, 2014-10-14 13:45
Previously unseen pictures of the ill-fated Titanic have gone on display in Belfast, the city where she was built and launched.
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AUDIO: Volleyball arrest woman 'under a lot of stress'

BBC test - Tue, 2014-10-14 13:25
A 25-year-old British woman called Ghonchech Ghavemi is to go on trial in Iran for watching a men's volleyball match.
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AUDIO: New pension rules explained

BBC test - Tue, 2014-10-14 13:13
Ros Altman, the government's tsar for older people, explains proposed changes to pensions rules.
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Fossilised bird egg offers clues to Brazil’s prehistoric past

Heritage Daily - Tue, 2014-10-14 12:04
Brazilian scientists have uncovered a near-intact fossilised bird egg- Brazil’s first- in Sao Paulo State.

 As Julio Cesar de A. Marsola and his colleagues explain in the journal Alcheringa, their discovery is of great importance due to a number of reasons. Compared to the abundance of eggs from non-avian dinosaurs, discoveries of complete eggs from Mezosoic birds are somewhat scarce.

Although there were no remains found inside this particular egg, known formally as LPRP USP-0359, the team’s extensive tests revealed crucial information about both the egg itself and its wider context. Their observations show that LPRP-USP0359 is, in fact, one of the smallest and thinnest shelled Mesozoic bird eggs ever discovered.

Furthermore, similarities between the Brazilian egg and specimens found in Argentina indicate an affinity between them as Ornithothoraces. Due to further similarities in where and how they eggs were found, the researchers suggest that the two birds may also have preferred the same types of breeding and nesting habitats- important clues that will aid palaeontologists in creating a more detailed picture of the South America’s Mesozoic past.

 

 

 

Contributing Source: Taylor & Francis

Header Image Source:  Wikimedia

 

Categories: General

AUDIO: 'Goldilocks' burglar found in house

BBC test - Tue, 2014-10-14 11:50
A retired couple from Lancashire returned from a holiday to find a burglar asleep in their bed.
Categories: General

VIDEO: Confusion over Thai murder trial

BBC test - Tue, 2014-10-14 11:08
A plea to postpone the start of the pre-trial hearings of two Burmese men charged with the murder of two UK tourists in Thailand has been rejected.
Categories: General

Swiss Scientists Explain Evolution of Extreme Parasites

Heritage Daily - Tue, 2014-10-14 10:19
Extreme adaptations of species usually cause such considerable changes that their evolutionary history is difficult to recreate. Zoologists at the University of Basel in Switzerland have now uncovered a new parasite species that represents the missing link between fungi and an extreme group of parasites. Researchers now have the information to understand for the first time the evolution of these parasites, which cause disease in humans and animals. The study has been published in the latest issue of the scientific journal Proceedings of the National Academy of Sciences (PNAS). 

Parasites use their hosts to simplify their own lives. To do this, they evolved features that are so extreme that it is often impossible to compare them to other species. The evolution of these extreme adaptations is often too difficult to reconstruct. The research group lead by Prof. Dieter Ebert from the Department of Environmental Science at the University of Basel has now found the missing link that explains how this large group of extreme parasites, the microsporidia, has evolved. Scientists from Sweden and the U.S supported the team in their work.

Microsporidia are a large group of extreme parasites that occupy humans and animals and create substantial damage for health care systems and agriculture; there are over 1,200 known species. They live inside their host’s cells and have highly specialised features, including: They are only able to reproduce inside the host’s cells, they have the smallest known genome of all organisms containing a cell nucleus (eukaryotes) and they don’t posses any mitochondria of their own (the cell’s power plant). Along with all this, they developed a specialised infection apparatus, the polar tube, which they use to insert themselves into the cells of their host. As a result of their phenomenal high molecular evolution rate, genome analysis has thus far been rather unsuccessful: their great genomic divergence from all other known organisms further complicates the study of their evolutionary lineage.

Between fungi and parasite

The team of zoologists lead by Prof. Dieter Ebert has been studying the evolution of microsporidia for a number of years. When they discovered a new parasite in water fleas a couple of years ago, they classified this undescribed species as a microsporidium, as it possessed the unique harpoon-like infection apparatus (the polar-tube), one of the classifying features of microsporidia. The analysis of the entire genome contained several surprises: The genome resembles more that of a fungi than a microsporidium and, in addition, also contains a mitochondrial genome. The new species, now named Mitosporidium daphniae, therefore represents the missing link between fungi and microsporidia.

With the help of scientists in Sweden and the U.S., the Basel researchers rewrote the evolutionary history of microsporidia. Firstly, they demonstrated that the new species derives from the ancestors of all known microsporidians and further, that the microsporidians are derivative from the most ancient fungi; there its exact place in the tree of life has finally been discovered. Further research has confirmed that the species does in fact have a microsporidic, intracellular and parasitic lifestyle, but that its genome is rather atypical for a microsporidium. It resembles much more the genome of their fungal ancestors.

Electronmicroscopic picture of the spores of the newly discovered microsporidium M. daphniae: Ronny Larsson

Genome modifications

The scientists came to the conclusion that the microsporidia adopted intracellular parasitism first and later altered their genome significantly. These genetic adaptations include the loss of mitochondria, as well as extreme metabolic and genomic simplification. “Our results are not only a milestone for the research on microsporidia, but they are also of great interest to the study of parasitic-specific adaptations in evolution in general”, explains Ebert.

 

 

 

Contributing Source: Universität Basel

Header Image Source: WikiPedia

Categories: General

AUDIO: Survivors recall HMS Royal Oak sinking

BBC test - Tue, 2014-10-14 09:26
Survivors of HMS Royal Oak recall the moment the boat was torpedoed by a U-boat in Scapa Flow leading to the loss of 800 lives.
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VIDEO: The West Lothian question - and why it matters

BBC test - Tue, 2014-10-14 07:16
Is it fair that Scottish, Welsh and Northern Irish MPs get to vote on laws that only apply in England?
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