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Are superfoods all that they’re cracked up to be? There’s plenty of worldwide hype about eating chia seeds, goji berries and quinoa - but what benefits do they really bring?
This documentary looks at what superfoods do for people and more. How is the healthy eating boom influencing agriculture and business? There are more and more restaurants serving superfoods in Germany. Florian Klar of Bochum opened the first superfood bistro in the Ruhr region about a year ago. He buys in all types of food, using local suppliers when he can, but he also uses exotic superfoods in his meals.
Quinoa, goji berries and chia seeds can now all be found in supermarkets as well. The food industry has discovered selling these products is lucrative and changed its product selection accordingly. Superfoods are simply that a foodstuff contains a high amount of nutrients. "Every country has its own superfood,” says nutritionist Matthias Riedl. Blueberries, flax seed, blackcurrants, and kale are all superfoods native to Germany.
The film also takes viewers to Bolivia, a key quinoa exporter, to see how the hype has influenced farming there. Exports of the so-called "Inca corn” quadrupled between 2007 and 2013. The rising price of quinoa on global markets has led Andean farmers to increase the size of their fields. Yet after just two straight years of quinoa harvests, the soil is already exhausted and barren.
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Probability is the examination of uncertain processes, but it's useful for far more than games of chance: http://www.gresham.ac.uk/lectu....res-and-events/proba
The modern theory of probability is considered to have begun in 1654 with an exchange of letters between Blaise Pascal and Pierre de Fermat, and has developed since then into the discipline which examines uncertain processes. For example, although on tossing a coin you have no idea whether you will obtain heads or tails we know that if you keep doing it then in the long run it is very likely that the proportion of heads will be close to a half. The lecture will discuss this and other examples of random processes e.g. random walks and Brownian motion.
The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectu....res-and-events/proba
Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 1,500 lectures free to access or download from the website.
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Robbert Dijkgraaf, Perimeter Institute for Theoretical Physics
March 5th, 2014
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Mathematics has proven to be "unreasonably effective" in understanding nature. The fundamental laws of physics can be captured in beautiful formulae. In this lecture I want to argue for the reverse effect: Nature is an important source of inspiration for mathematics, even of the purest kind. In recent years ideas from quantum field theory, elementary particles physics and string theory have completely transformed mathematics, leading to solutions of deep problems, suggesting new invariants in geometry and topology, and, perhaps most importantly, putting modern mathematical ideas in a `natural’ context.
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visit Perimeter Institute's website to find this and other speakers
http://www.perimeterinstitute.ca/video-library
http://pirsa.org/
Where do we get our mathematical symbols from? Why is the set of integers called ℤ ? When was the equals sign first used? How about zero? Good notation tends to catch on quickly, whereas bad notation can obscure beautiful theory.
The lecture explores how the introduction of new notation has paved the way for new leaps in understanding, and considers some mathematical quirks of language, such as what the number 4 in English has in common with the number 11 in Russian.
A lecture by Sarah Hart
The transcript and downloadable versions of the lecture are available from the Gresham College website:
http://www.gresham.ac.uk/lectu....res-and-events/maths
Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.
Website: https://gresham.ac.uk
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