Water, water, everywhere...

It takes over 17,000 litres of water to produce just 1 kg of chocolate.

That's one of the startling figures compiled in a new report on food waste by the Institution of Mechanical Engineers in the UK.

The report: Global Food - Waste Not, Want Not; made the news last month because of the headline-grabbing figure of 50%. That's the proportion of food wasted worldwide without ever reaching a human stomach.

The figures for water usage in the report come from the Water Footprint Network and make for stark reading when tabulated (see below). For example, it takes 822 litres of water to produce 1 kg of apples.

On average, 1 kg of beef takes 15,415 litres of water to produce and one cup of tea takes 27 litres.

The various wasted inputs (water, energy, agrochemicals, etc.) associated with wasted food is often not considered by consumers but, as the report states: "[the 50% headline figure] does not reflect the fact that large amounts of land, energy, fertilisers and water have also been lost in the production of foodstuffs which simply end up as waste".

Water use in agriculture (Source: Global Food - Waste Not, Want Not)

According to a recent European Environment Agency (EEA) report on water use in Europe, agriculture accounts for 33% of total water use. That figure can go as far as 80% in parts of southern Europe where irrigation of crops is essential and accounts for almost all agricultural water use.

In the clamour for higher yielding varieties of crop plants for agriculture, it makes sense to stop and think about how current yields are squandered and how limiting resources such as water and energy and thrown in the bin.

You can read the food waste report here.

You can read the EEA report here.

I write more on the issue of food waste, the global future of crop production and precision agriculture in the Spring edition of Walton Magazine, which is out now.

Image: Watering Crops by Margaret W. Nea. Creative Commons

Why the Irish Potato Famine was not caused by a fungus

During the long, wet summer of 2012 (perfect late blight weather!), I gave a short public talk about the potato and late blight as part of the Taste of West Cork Festival in Skibbereen, Co. Cork.

The panel of speakers also included the excellent and informative broadcaster Éanna ní Lamhna (of RTE radio fame) who spoke about the history of the potato as well as the history of the Irish potato famine.

Despite the argument that political and economic issues had a great role to play in the Irish potato famine, there is no doubt that the loss of the potato crop due to late blight was the trigger that started it all.

Late blight was, and is, caused by the plant-pathogenic organism Phytophthora infestans which, unfortunately, many people describe as a 'fungus'.

Éanna ní Lamhna described it as such during her talk and I, humorously and good-naturedly (I think!), pulled her up on it. As you can imagine, given that much of the audience had come to see and hear the delightful Ms. ní Lamhna and not some young upstart like me, I had to thread very carefully and there was much friendly banter.

Speakers at the 'Humble Spud' talk

You can't blame anyone for making the mistake - P. infestans is often described as a fungus by those who really should no better.

Browsing through the excellent Atlas of the Great Irish Famine (Cork University Press) recently, I noticed the disease-causing organism is described in several places therein as a 'fungus'.

In a news report in a January issue of the journal Nature, P. infestans was described as "an organism similar to, and often grouped with, fungi". If the author meant that it is often grouped or lumped-in with fungi on a casual (and incorrect!) basis, she's quite right, but as we now know, the organism is not grouped (i.e. classified) as a fungus by fungal taxonomists.

The minutiae of fungal taxonomy is not something we should get bogged down in here (although some would argue that that boat has sailed!), but P. infestans is classified as an oomycete and can be found in the same kingdom as the brown algae and diatoms. Although it may have started out in the Fungi kingdom, it is now firmly categorised as a 'fungal-like organism'.

Damage caused by late blight of potato (APSNET)

A letter in this week's issue of Nature, taking issue with the original news report, states: "It was Anton de Bary, the father of mycology, who coined the genus name Phytophthora ('plant-destroyer') and classed the pathogen as a fungus. But modern molecular sequencing indicates that his interpretation was incorrect"

"The organism is actually an oomycete, a pseudo-fungus that evolved from killer ancestors in the ancient oceans and not from wood-degrading fungi", concluded the author.

Within mycology (the study of fungi), there is some debate over the use of the term fungus. While none would argue against the weight of molecular evidence that clearly puts P. infestans outside the Kingdon, some would argue that, since they are of interest to mycologists and they share many of the common morphological features of fungi, a broader defintion of the term is required.

Money (1998) has argued that the term fungus should have two distinct meanings: (1) the strict taxonomic name used to describe organisms from the Kingdom Fungi and (2) a practical reference to organisms studied by mycologists that share similar characteristics to fungi.

Somehow, I think the taxonomists would disapprove, and so would I.

What would the first mammal look like?

The image below might look like your average small rodent - long tail, sharp teeth for insect-eating and small enough to fit in the palm of your hand, it is in fact, what scientists predict the world's first mammal looked like.

An artist’s rendering of the hypothetical placental ancestor (by Carl Buell)

About 65 million years ago, some 70% of the species on the planet were wiped out by some cataclismic event. After this wipeout, a new group of animals emerged which were to evolve to be the most successful on the planet.

The placental mammals vary hugely in size and shape. Of the c. 5,100 species now extant on earth, they range from the bumblebee bat that weighs around 1.5 g (that's just half the weight of a 2 cent (euro) coin!) to the blue whale that weighs in at 190,000 kg.

Now, scientists from around the world have published (pdf) what they believe the first of these mammals looked like. Using a mixture of genetic and morphological data, the team deduced that the "hypothetical placental ancestor" weighed between 6 and 245 g, ate insects and produced single offspring which were born hairless with their eyes closed.

The paper concludes that the placental mammals arose quickly after that cataclismic extinction event, known to scientists as the Cretaceous-Paleogene (K-Pg) event, probably between 200,000 and 400,000 years afterwards.

Tyndall and Albemarle Street

News that the Royal Institution's magnificent headquarters in Mayfair, London may be placed on the market have caused somewhat of a divide amongst scientists.

While an editorial in the journal Nature called the RI itself "redundant" and argued for its collection of historic equipment and other resources to be bundled off to the Science Museum, other commentators, including Prof. Bruce Hood have argued, convincingly, for the institution to remain and to remain at its Mayfair location.

Hood argued in the Huffington Post that the Faraday lecture theatre at the RI has become the "iconic home of British science" and a "sacred site".

"[It is] a place that trancends a financial value, a cultural heritage that belongs to the world as much as Stonehenge" writes Hood.

Supporters rightly point to Michael Faraday, a physicist who pioneered the notion that science (and scientists) have a duty to communicate their work to a general audience. It was Faraday who began the famous RI Christmas Lectures in 1825 - they have been broadcast on TV since 1966.

Also worthy of mention here is the noted Irish-born scientist John Tyndall, who succeeded Faraday as Director of the Royal Institution in 1867.Tyndall was born in County Carlow in 1820 and studied in Britain and Germany, making significant contributions to a variety of fields including magnetism, heat and atmospherics. However, like Faraday, one of his great contributions was in science communication.

 Having joined the RI originally in 1853 (he was unsuccessful in applying for jobs at Galway, Cork and elsewhere), Tyndall delivered the RI Christmas lectures 12 times, from 1861 to 1884 and, like Faraday, was conscious of the need for science to be communicated to the public. He had developed his style of lecturing as a schoolteacher and in later years, according to Meadows, found that a drink before lectures improved his performance.

In a preface to the third edition of his book Heat: A Mode of Motion, Tyndall noted that his work on public lectures allowed him an opportunity to acquaint himself with the "knowledge and needs of England".

Tyndall and his contemporaries "deprecated and deplored the utter want of scientific knowledge, and the utter absence of sympathy with scientific studies, which mark the great bulk of our otherwise cultivated English public".

He was convinced that "if a scientific man take the trouble, which in my case is immense, of thinking and writing with life and clearness, he is sure to gain general attention. It can hardly be doubted, if fostered and strengthened in this way, that the desire for scientific knowledge will ultimately coerce the anomalies which beset our present system of education".

John Tyndall

"Science must grow", concluded Tyndall. "Its development is as necessary and as irresistible as the motion of the tides, or the flowing of the Gulf Stream. It is a phase of the energy of Nature, and as such is sure, in due time, to compel the recognition, if not to win the alliance, of those who now decry its influence and discourage its advance".

While it is not my place to tell the British scientific community what to do, Prof. Hood is correct in pointing out that the RI building is not just an important site for British science, it is of worldwide significance and would ideally be maintained for its current purpose. Would the worldwide art community permit the French government to sell off the Louvre or the British government to put the National Gallery up for sale?

In a recent letter to The Times of London, David Attenborough, along with 21 scientists wrote that "If Britain loses the Royal Institution, it loses a part of its past. This institution, with its iconic lecture room where almost all the Christmas lectures have been delivered, is just as precious as any ancient palace or famous painting".

"This must not happen in a country that cares about culture, and least of all in one that pins its hopes for future prosperity on a new generation of scientists and engineers."

There is something to be said about public engagement with science being more than just about bricks and mortar. Hands-on experimentation and web-based interaction are all tremendous leaps forward that, I'm sure, Faraday and Tyndall would have approved of. However, they do not replace a rich cultural heritage of science and scientific communication that is represented by the RI building at Albemarle Street, which is of enormous value besides its monetary one.

You can sign a petition to save 21 Albemarle Street as the home of the Royal Institution here.

Éamon de Buitléar Dies at 83

The death has been announced of Irish environmentalist, film-maker and naturalist Éamon de Buitléar.

His work on such programmes as Amuigh Faoin Spéir  (Out Under the Sky), The Natural World and A Life in the Wild had made him Ireland's per-eminent wildlife film-maker and his passion for the Irish environment and the natural world in general was infectious.

President of Ireland, Michael D Higgins has led tributes to the broadcaster, saying that Éamon de Buitléar would be remembered as an "outstanding broadcaster in both languages[Irish and English]".

"A great communicator, his warm and engaging personality as well as his enthusiasm and knowledge touched people of all ages. He will also be remembered as an accomplished musician."

Éamon de Buitléar presented his extensive archive to NUI Galway in November 2012 and some of it is captured in the short video below.

Defining the University

On Sunday December 2nd 1787, John Lettice rose to preach at the University of Cambridge about a subject close to his heart - the state of British universities.

Lettice (presumably some distant forebear of yours truly) was Vicar of Peasmarsh in Sussex and formerly a fellow of Sidney-Sussex College at the University.

The sermon, entitled 'The present state of Discipline, Manners and Learning in our Universities', starts on a pessimistic, or perhaps realistic, note reminding us that all institutions, no matter how well intentioned, are subject to 'disorder':

"Even those institutions, which are farthest removed from the world and its contagious influence; institutions established for the cultivation of wisdom and science, and placed under the more peculiar guardianship of reason and religion, are destined, in some measure, to experience those corruptions, from which nothing sublunary is exempted".

That disorder is something that Stefan Collini writes about in his latest book 'What are Universities for?' It's a book that's well worth a read if you're interested in higher education and the role of universities in society.

The key question of what universities are for has been answered in some shape or form by many commentators before. Lettice, for his part, contributes:

"They are, be it spoken with the reverence they claim, nothing less than storehouses of the collected wisdom of the ages, the depositories of those great first principles in religion, in morals, in legislation, in philosophy"..."they are the sources, from whence flow all the sounder principles, that actuate and guide the mighty machine of national government, and subject the passions of men to the general order of dominion."

Noble motives indeed!

Collini does an excellent job of giving us an updated impression of the role of higher education in society but also reminds us of some more cynical views of what a university is, including Robert Maynard Hutchins' line that a university is 'a series of schools and departments held together by a central heating system'.

'What are Universities for?' is divided into two parts, part one being more successful than the second half of the book.

The first part deals with the current function of universities in Britain, although it is more widely applicable, and offers an excellent  discussion of the place of humanities in higher education as well as an update, of sorts, to the seminal 'The Idea of a University' by John Henry Newman.

As part of a history of higher education in Britain, Collini is highly critical of the "all-devouring audit culture" that has "so signally contributed to making universities less efficient places in which to think and teach".

Of course, this audit culture hinges on the perceived importance of ensuring that public funds are not being wasted by being spent on teaching subjects which are not deemed (by who?) to be economically essential or important. As Collini puts it: "This all too easily translates into the economic philistinism of insisting that the activities carried out in universities need to be justified, perhaps can only be justified, by demonstrating their contribution to the economy."

The author rightly points out that society has never, and should never, educate its young people purely as an economic necessity. "It educates them", according to Collini "in order that they should extend and deepen their understanding of themselves and the world, acquiring, in the course of this form of growing up, kinds of knowledge and skill which will be useful in their eventual employment, but which will no more be the sum of their education than that employment will be the sum of their lives".


Perhaps due to the author dwelling on changes in the politics of education in Britain in the second part of the book, it was generally less successful to my mind. Despite that, a section where Collini recounts a typical week-in-the-life of a university lecturer is particularly enlightening (and amusing), especially in light of recent ill-informed commentary regarding the work ethic of university professors (more on this).

Collini correctly points out that the world of academia is often "sustained by what is essentially voluntary labour" and that continuing this relentless need to repeatedly audit higher education institutions runs the risk of liquidating this store of good will. After all, if it can't be audited, why should we do it?

What are Universities for? by Stefan Collini is published by Penguin 

12 Posts of 2012

It's been an exciting year for science and as we look forward to 2013, it's time to look back at the 12 top posts from Communicate Science in the last 12 months.

January
A scientific expedition to Suriname yielded some impressive results for Conservation International - not least the possibility of newly classified species. A photo special. +more

February
If the Irish Examiner were intending to start a real debate about Autism, they went about it the wrong way. My response to an article by Tony Humphreys and his stereotypical view of scientists. +more

March
Teagasc plans to plant GM potatoes in Ireland were outlined. I wrote in the Guardian on why it makes sense to carry out such trials. +more

April
How agriculture in the future should not be limited by idealogy, but informed by science. From the Guardian Science Blog. +more

May
Unfortunately, the subject of George Boole's house and its perilous state of repair fetaures again this year. Hopefully not for long more though? +more

June
A lesson from the EU Commission on how not to encourage girls to study science. +more

July
The tale of James Drummond and the almost forgotten Botanical Gardens at Cork. +more

August
The Race to Mars: How NASA's Curiosity Rover got to the Red Planet. +more

September
In light of recent studies, why organic agriculture must turn to science to survive. +more

October
Why the abolition of Ireland's Chief Scientific post is bad news for Irish science. +more

November
How an £18.5 million visitor centre at the Giants Causeway caused controversy in scientific circles and a rethink by the National Trust. +more

December
Some spectacular humpback whale activity in West Cork to finish the year off in style - a photo special. +more