This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Saturday, 28 February 2015
Friday, 27 February 2015
Thursday, 26 February 2015
Hole in One?
Strange things seem to be happening in Brazil for the 2016 Olympic Games where golf will return as a sport (http://www.theguardian.com/world/2015/feb/25/rio-2016-occupy-takes-swing-at-olympic-golf-course). A golf course for this event is being created in a section of the protected Marapendi Reserve which is part of Brazil's Atlantic Forest and home to a number of endangered species (butterflies and fish). Golf courses are notorious for the amount of water they consume and this one is calculated to need 5m litres per day in an area where the substance is at a premium. The site has, reportedly, been developed without conducting an environmental impact assessment (the mayor of the region declares that none was needed as the city council approved the decision). It appears that money does more than talk.
Do You Really Get Energized by Sugar Drinks?
There is a recent call by charities to ban the sale of 'energy drinks' to children under 16 (http://www.bbc.co.uk/news/health-31623771). This is on the basis of their high sugar content (up to 20 teaspoons of sugar in one can) and their high caffeine dose. This has been linked to diabetes and obesity (as well as tooth decay?). There has been little mention, however, of reactive hypoglycaemia. When people take an acute 'sugar hit', the elevated blood glucose triggers a release of the hormone insulin (designed to convert glucose into stored glycogen). This, more markedly in some people than others, may produce an undershoot in the normal blood sugar values. The brain stores no glucose so would be receiving blood deficient in energy, This has been linked to profound mood changes in healthy humans (and reduced energy). Having blood sugar levels going up and down like a roller-coaster can't be a good idea! Whether a ban could be imposed and whether it could work is another question.
Wednesday, 25 February 2015
Great Gerbils: A Plague on Their Houses
There is a recent study from Oslo University claiming that plague in Europe was largely introduced by Gerbil fleas rather than those of the maligned Black rat (http://www.theguardian.com/science/2015/feb/24/great-gerbils-chief-cause-of-the-great-plague-not-black-rats-study-says). The conclusion is based of the observation that fleas leave their rodents when host numbers decline and plague (which killed almost 30% of Europeans) showed fluctuations in incidence. The fluctuations were, however, not linked to populations of Black rats in Europe but to Great gerbils in Asia. The authors suggested that the fleas on the gerbils in times of host shortage leapt upon human traders using the Silk Route and consequently repeatedly carried plague into Europe. So the Black rat is innocent?
Tuesday, 24 February 2015
The Cure (For Peanut Allergy)?
There is an interesting study from King's College, London demonstrating pretty conclusively that exposing children in early life to peanut butter and other peanut-containing foods, greatly reduces the probability of that individual developing peanut allergy in later life (http://www.theguardian.com/society/2015/feb/23/feed-babies-peanuts-reverse-allergy-rise). Peanut allergies (including full-blown anaphylactic shock, a condition that is life-threatening) have been on the rise in recent years and this may be a consequence of parents avoiding anything peanut related in their child's food. Obviously, whole peanuts should not be given to young children as they are a choking hazard but peanut butter (if administered carefully) would seem to be safe enough. The finding is entirely consistent with the view that children develop tolerances for certain foods in early life or even within the womb (this may account to cultural differences in the rates of certain food allergies).
Housey Housey
It is interesting that the Green Party appears to be being a bit populist in promising up to 500,000 new social housing units by 2020 (http://policy.greenparty.org.uk/ho.html). I appreciate that there is a great deal of inequality in the present 'system' and that many people in the UK do feel a powerful 'need' to occupy traditional housing with garden and garage but any such development would have to be very carefully managed. I personally would not favour traditional units being dropped into the landscape on every square foot of 'available' land (especially if our limited natural environment is ear-marked for this role). Agricultural land may also be out as the UK is not even near being capable of growing sufficient food to feed its population. The units would also have to be effectively insulated and heated (suggesting that they would not be 'cheap and cheerful'). Perhaps there is a need to consider alternative modes of accommodation that do not occupy such a large surface area? Although this would not appeal to territorial folk.
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