The Key to Longevity

By: Kate M. Serrano

It is well known that Japan has one of the better life expectancies worldwide. Scientists often explain this phenomenon by the quality and health content of food Japanese people eat: a lot of fish and vegetables and very little meat. But when two countries from Europe, namely Italy and Switzerland, are both as well ranked by the Organization for Economic Co-operation and Development (OECD) as Japan, the mystery of longevity once again becomes a blur.

The OECD is an organization of 34 countries that helps promote policies to improve the economic and social well-being of people around the world. They work with governments to seek solutions to common problems and help drive social, economic and environmental change. Since 1970, countries from the OECD have extended their life expectancy by ten years. This progress can be explained by the improvement of the living conditions and the advances in medicine. While the Japanese eat rice and drink tea, Italians eat pasta and drink coffee. In this case, it seems that the quality of food is not as determinant in the longevity as we thought it was. Geographically close to Italy, Switzerland is standing at the highest place of the podium with a life expectancy of 82.8 years and is one of the richest countries in Europe. Ironically the United States – who is as rich as Switzerland – is 24 ranks down.

So what is the key to longevity? It’s not just on the quality of food intake and eating patterns, it’s just a quarter of the story. There are other factors to consider – a healthy lifestyle and time well spent for loads of happiness.

                      

France’s Newest Enemy

By: Jessica Robertson

France has recently been invaded by a surprising foe – the New Guinea flatworm. Platydemus manokwari, as it is also known, is the only terrestrial flatworm on the list of the 100 most invasive alien species in the world, published by the Invasive Species Specialist Group (ISSG). The list details species that, due to the modern increase of globalization and worldwide trade, have entered a new habitat and caused harmful disruption in the ecosystem.

The New Guinea flatworm was found recently in a greenhouse of the Jardin des Plantes de Caen, and was definitively identified by its notable appearance and through special molecular analysis. These findings are no less than startling, considering this is the first instance of the species’ presence in all of Europe, not in France alone.

Snails are the main diet of this flatworm, which has been introduced in over fifteen Pacific territories, sometimes deliberately and sometimes not. The snail population in these Pacific territories has decreased significantly, causing a huge reduction in the genetic diversity of the numerous snail species. In the past, the flatworm was supposed to eradicate one particular harmful species of snail, promising better results in agriculture.  However, the serious threats of this invasive flatworm species far outweigh any ecological benefits it may previously been thought to have.

While the flatworm originates from the tropical country of New Guinea, it most often inhabits the cool mountain regions of the country, meaning it may easily adapt to the European climate. It is known to consume European snails, and, in the absence of snails, to consume earthworms. These predictions boast a surprising threat to biological diversity in France and all of Europe, where hundred of species of snails currently thrive. Now, before the flatworm continues in its conquest, is the time to eradicate the New Guinea flatworm from its new desired kingdom.