Um dos Analgésicos Mais utilizados poderiam Prevenir o Envelhecimento prematuro e morte POR combater a Inflamação, SUGERE nova Pesquisa. NOS ja sabemos Que da S Envelhecimento MAIS RAPIDO E freqüentemente Associada COM Marcadores de Inflamação Crónica ativados. Com Estes Resultados, PODEMOS ágora Comecar um Pensar seriamente sobre a Inflamação Como hum motorista potencial de Envelhecimento acelerado e Como NÓS PODE Ser Capaz de retardo-la.
Join us online to learn more about DSE's See and Learn resources to support early language, reading and speech development, and our new reading and language intervention (RLI) for primary/elementary children with Down syndrome.
Les cartes mentales : Un outil très utile pour mieux appréhender et mémoriser des notions. Génial également comme support lors d'une prise de parole en public ou pour mener des réunions, faire un cours… J'ai testé pour ...
Wars of the future will be fought over water as they are over oil today, as the source of human survival enters the global marketplace and political arena. Corporate giants, private investors, and corrupt governments vie for control of our dwindling supply, prompting protests, lawsuits, and revolutions from citizens fighting for the right to survive. Past civilizations have collapsed from poor water management. Can the human race survive?
Award-winning featured documentary narrated by Malcolm McDowell. Global Warming is an issue of 'how' we live, the water crisis is an issue of 'if' we live. DVD at www.bluegold-worldwaterwars.com
Ciencias para la Autosuficiencia Total ... en ... EKOSMUNiDAD ... Documentos para la Arkairis i la ... Escuela de Artes i Oficios Artesanales ... Dedicados a la Generacion de Energia i desarrollo de Comunidades sustentables.
This interactive graphic is based on the data for candidate planets identified by NASA's Kepler Space Telescope. Kepler found these planets by recording the slight dimming of the light from a star caused by a planet passing in front of it.
About 10 per cent of the candidate planets will probably turn out to be no such thing – it's possible to mistake the second star in a binary star system for a giant planet, for example. On the other hand, Kepler probably missed around 10 per cent of the planets that passed in front of target stars because the dimming of the star's light was too slight to detect against the natural variability in the stars' light output. These two numbers roughly cancel each another out, so they are not included in our calculations.
The first step in answering "How many Earths?" was to ignore planets twice the Earth's diameter or larger: these are likely to be gas giants like Jupiter, not rocky worlds like ours. However, such planets may possess rocky moons, which could well host life.
Not all of the remaining planets will be hospitable to life. For example, carbon-rich planets could have a graphite crust with layers of diamond below and rivers of oil and tar.
Kepler could not determine a planet's composition, but to calculate how many planets might be friendly to life, we estimated the number in stars' habitable zones – orbits where a planet will be neither too hot nor too cold for water to exist in liquid form.
Defining a star's habitable zone is a complex process, but as a reasonable proxy we used Kepler's estimates of planets' equilibrium temperature. This is the temperature that would be measured at a planet's surface if it were a black body heated by its parent star without any atmospheric greenhouse effect.
The next step – the most uncertain part of our quest – was extrapolating to the total number of roughly Earth-sized planets likely to be orbiting Kepler's 150,000 target stars. Simple geometry tells us that Kepler will have missed most of these planets: the tilts of their orbits mean they never passed between their parent stars and the telescope. And the farther out a planet orbits, the harder it was for Kepler to detect.
Taking everything into account, the best estimate for the average number of roughly Earth-sized planets in each star's habitable zone is 0.15, according to simulations based on Kepler data thatCourtney Dressing and David Charbonneau of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, performed. Applying this average to Kepler's 150,000 target stars gave our estimate of 22,500 potentially habitable, roughly Earth-sized planets.
There is an important caveat, though. Dressing and Charbonneau's calculations are for class M stars, which have a reddish hue and account for about three-quarters of the stars in our galaxy. But about 80 per cent of Kepler's target stars are class G stars, like our sun, which are yellowish. Nobody knows for sure whether these different classes of stars have similar populations of planets.
The final step in our quest was to extrapolate to the entire galaxy. Estimates of the number of stars in the Milky Way vary from 100 billion to 200 billion. Applying the same estimate of 0.15 potentially Earth-like planets per star gave our figure of between 15 and 30 billion.
If we had displayed all these potential planets in the final view, the sky would have become a mass of green. To give a meaningful view for someone here on Earth, we selected stars from the European Space Agency's Tycho-2 catalogue with an apparent magnitude of 10.5 or brighter – these stars would be visible on a dark night with a good pair of binoculars. We have displayed a random sample of 15 per cent of these stars, corresponding to Dressing and Charbonneau's estimate of stars with potentially habitable, roughly Earth-sized planets.
Por muitos apelidado de «o homem mais feliz do mundo», Matthieu Ricard brindou a comunidade com a sua palestra sobre os Hábitos da Felicidade numa TEDtalk de grande improtância para todos os que acreditam que é importante ser feliz.
João Carreira's insight:
For many dubbed "the happiest man in the world," Matthieu Ricard toasted the community with his lecture on the Habits of Happiness TEDtalk a large importance for all who believe it is important to be happy.
Send to Kindle In the beginning, all you needed was one one-way dogmatic ad, “thou shalt not eat from this tree.” And people obeyed. Well, at least until a higher bandwidth, more engaging interactive ad hissed, “really, he said what?
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