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Predators Drive the Evolution of Poison Dart Frogs’ Skin Patterns

By Guest PostNovember 25, 2011Natureamazon forest, athieu chouteau, biologist, butterfly, evolutionary process, exotic defensive signal, forest, heliconius genus, mathieu robert sauve, museum national d histoire naturelle, natural selection, Paris, peruvian, plasticine models, poison dart frog, poisonous frog, predators, ranitomeya, salamanders, skins patterns, snakes, tarapoto, university of montreal

Natural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator poison dart frog, according to a study that will be published in an upcoming edition of American Naturalist by University of Montreal biologist Mathieu Chouteau. The researcher’s methodology was rather unusual: on three occasions over three days, at two different sites, Chouteau investigated the number of attacks that had been made on fake frogs, by counting how many times that had been pecked. Those that were attacked the least looked like local frogs, while those that came from another area had obviously been targeted. (more…)

Research Reveals How Butterflies Copy Their Neighbours to Fool Birds

By Guest PostAugust 13, 2011Natureamazonian species, bates and darwin, butterfly, chromosomal region, chromosome, cnrs, DNA, eaten by birds, evolutionary thinkers, heliconius numata, liverpool university, mathieu joron, melinaea, müllerian mimicry, muséum national d'histoire naturelle, neighbouring species, non mimetic patterns, Paris, patterns of warning colouration, peppered moth, rainforest, richard ffrench constant, supergene, university of exeter, wallace, wing colour patterns, wing patterns

The mystery of how a butterfly has changed its wing patterns to mimic neighbouring species and avoid being eaten by birds has been solved by a team of scientists.

The study is published in the journal Nature. (more…)

So You’re Planning a Trip to…..Paris

By Guest PostAugust 9, 2011Holidays 'n Travelsarc de triomphe, au revoir, autumn, bonjour, champs elysées, city of lights, eiffel tower, english, europe most romantic city, french phrases, good bye, hello, louvre, merci, musée d´orsay, notre dame, Paris, paris travel guide, parisians, planning a trip, please, s'il vous plait, sacré coeur, thank you

So you’re planning a trip to the ‘city of lights’, Europe’s most romantic city! Although the prospect of seeing famous sights such as the Louvre, Eiffel Tower, Notre Dame and Sacré Coeur is an exciting one, here are a few tips to keep in mind both before setting off and during your stay in Paris. (more…)

Sun and Planets Constructed Differently, Analysis from Nasa Mission Suggests

By Guest PostJuly 3, 2011Sciencebernard marty, centre national de la recherche scientifique, dugway, earth, gaseous nebula, genesis mission, george jarzebinski, heavy elements, isotopes, isotopic composition of oxygen, kevin mckeegan, martian, megasims, NASA, neutrons, o 16, oxygen and nitrogen, oxygen atoms, oxygen on mars, Paris, planets, protons, rocky planet, roger wiens, secondary ion mass spectrometer, solar material, solar system, solar wind, sun, utah, utah test and training range, veronika heber

The sun and the solar system’s rocky inner planets, including the Earth, may have formed differently than previously thought, according to UCLA scientists and colleagues analyzing samples returned by NASA’s Genesis mission.

The data from Genesis, which collected material from the solar wind blowing from the sun, reveal differences between the sun and planets with regard to oxygen and nitrogen, two of the most abundant elements in our solar system, the researchers report in two studies in the June 24 issue of the journal Science. And although the differences are slight, the research could help determine how our solar system evolved. (more…)

For UCLA Expert on Chumash Indians, Roughly Hewn Beads are Child’s Play

By Guest PostMay 8, 2011Culture, Scienceamerican southwest pueblos, archaeologist, archaeology, artifacts, bead makers, beads, california, channel islands, chumash, chumash indians, chumash people, craft apprenticeship, europeans, france, global archaeological record, jeanne arnold, North America, olivella, olivella biplicata shells, Paris, santa cruz island, shells, southern california, stone age, ucla

As the world’s leading authority on beads manufactured from shells by California’s Chumash Indians, UCLA archaeologist Jeanne Arnold was stumped by a series of anomalous artifacts excavated at former settlements on the Channel Islands.

Pierced with more than one hole, often at unconventional angles or too close to the edges, the oddly configured multi-hole beads differ considerably from the smooth, round, precisely drilled beauties that served as currency among the Chumash prior to the arrival of Europeans in Southern California. (more…)

Harmful Illusions Bedevil Ideas About Free Markets and Imprisonment, UChicago Professor Writes

By Guest PostMarch 5, 2011Economy, Politicsbernard harcourt, civic values, economic exchange, economic transgressions, free market system, free markets, freedom, french thinkers, friedrich hayek, government interference, hyper regulated grain market, incarceration, jeremy bentham, julius kreeger professor, logic of neoliberal penality, notion, Paris, penitentiary, philadelphia, physiocrats, political sphere, prison, ronald reagan, the rule of nature, united states

The United States prizes freedom above most other civic values, yet Bernard Harcourt believes the notion is widely misunderstood and inconsistently applied.

Freedom from government interference is a key tenet of the free market system that the United States champions, but Harcourt notes that Americans expect vigorous government action in imprisoning criminals. The result is a deep inconsistency, he argues, for even as the United States preaches freedom in the marketplace, it maintains the world’s highest incarceration rate. (more…)

Religion: Convergence of Cultures or Clash of Creeds?

By PravdaAugust 15, 2010Cultureabraham, adhan, afghanistan, Bible, bubonic plague, bullet, burqah, christian crusaders, doctrine, god, ground zero, islamic calendar, jesus, jewish, józsef molnár, koran, last supper, moslems, mosque, mother nature, muezzin, new testament, ortega y gasset, Paris, patriarch abraham, pravda, prayer, president barack obama, prophet mohammed, ramadan, talmud, tel aviv, timothy bancroft-hinchey, Wikipedia

With the beginning of Ramadan, the Ninth Month of the Islamic Calendar, come hot debates, as to whether Moslems should be allowed to slit the throats of sheep in public, to make the call to prayer (Adhan) in non-Moslem communities, to build a Mosque near Ground Zero.

(more…)

Writers, Shakespeare and Oscar Wilde

By ShamsDecember 14, 2008CultureAntiquarian books, Notre Dam, Oscar Wilde, Paris, Shakespeare

If you have little money and fewer connections but you are a Writer, you have chances to spend some classic days (or even months) in this famous bookshop of Paris.

(more…)

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