Archivo de la etiqueta: Earth

Earth life ‘may have come from Mars’ By Simon Redfern | thanks to @BBCNews


Life may have started on Mars before arriving on Earth, a major scientific conference has heard.Gale crater, Mars

New research supports an idea that the Red Planet was a better place to kick-start biology billions of years ago than the early Earth was.

The evidence is based on how the first molecules necessary for life were assembled.

Details of the theory were outlined by Prof Steven Benner at the Goldschmidt Meeting in Florence, Italy.

Scientists have long wondered how atoms first came together to make up the three crucial molecular components of living organisms: RNA, DNA and proteins.

The molecules that combined to form genetic material are far more complex than the primordial “pre-biotic” soup of organic (carbon-based) chemicals thought to have existed on the Earth more than three billion years ago, and RNA (ribonucleic acid) is thought to have been the first of them to appear.

Simply adding energy such as heat or light to the more basic organic molecules in the “soup” does not generate RNA. Instead, it generates tar.

Full story? Here  :)

RNA needs to be coaxed into shape by “templating” atoms at the crystalline surfaces of minerals.

The minerals most effective at templating RNA would have dissolved in the oceans of the early Earth, but would have been more abundant on Mars, according to Prof Benner.

This could suggest that life started on the Red Planet before being transported to Earth on meteorites, argues Prof Benner, of the Westheimer Institute of Science and Technology in Gainesville, US.

The idea that life originated on Mars and was then transported to our planet has been mooted before. But Prof Benner’s ideas add another twist to the theory of a Martian origin for the terrestrial biosphere.

siliconrepublic.com | Latest Stories


siliconrepublic.com

  • We take a look at some of the most-viewed and most-shared videos on the web. This week features some Oscar-worthy performances from cute animals, the commander of the dark side in the happiest place on Earth, a safety briefing everyone will want to listen to, some manly encouragement for Movember, 250 movies in two and a half minutes and the only way to settle things – hoop-off!  | >>>>

  • Tech start-up of the week: iGeotecOur tech start-up of the week is iGeotec, a geospatial technology spin-out from NUI Maynooth that has developed a geoinformatics platform based in the cloud that handles GPS, digital mapping, sensors, spatial analytics, mobile and web-location enabled services.  | >>>>

  • Spot the International Space Station with new NASA serviceUS space agency NASA has announced a new service to help earthlings spot the International Space Station when it is overhead.  | >>>>

  • OPINION – Ireland’s public sector needs greater direction on legal implications of cloud computingIreland’s public service needs to develop a greater understanding of the legal implications of cloud computing in terms of where the data resides, argues Dr Bob Strunz from the University of Limerick.  | >>>>

Tree Of Life: The History of the World, Visualized


See on Scoop.itGabriel Catalano 

This Great Tree of Life diagram is based primarily on the evolutionary relationships so wonderfully related in Dr. Richard Dawkins’ The Ancestor’s Tale. Some secondary branching relationships and ages of common ancestors were gleaned from university and other scholarly websites as well as scientific journals. The smallest branches are purely illustrative; they are intended to suggest the effect of mass extinctions on diversity, and, on a few of the branches, changes in diversity through time. This tree of life diagram is NOT intended to be used as a scholarly reference tool or as a complete picture of life history (only a very few extinct main branches are shown, for example). Instead, it tries mainly to illustrate a great lesson of evolution; that we are related not only to every living thing, but also to every thing that ever lived. Click to view an enlargement of this Great Tree of Life.

‘To make the Great Tree of Life easier to understand, it is drawn from the human, mammalian point of view.’
Distortions and Limitations: In order to make the Great Tree of Life uncluttered and easier to understand, a number of distortions have been purposively built in. First, and most important, this Great Tree of Life is drawn from the human, mammalian point of view. That is why humankind, instead of some other organism, occupies a branch tip at the end of the tree, and why our vertebrate cousins (animals with a backbone) occupy a large part of the tree. This falsely suggests that humans are the ultimate goal of evolution. In fact, if that asteroid or comet that hit the earth 65 million years ago and helped wipe out the dinosaurs, had instead missed the earth, there might not be a dominant, tool-using, space-faring species on earth. Or if one evolved, it might be a dinosaur, not a mammal. Also, the world of bacteria holds far more genetic diversity, and accounts for a vastly larger proportion of biomass than animals do, yet Bacteria occupy only a relatively small portion of the tree. Trees of Life drawn from the bacterial point of view look very different: on these diagrams, the whole world of animals and plants occupy only a tiny part of the tree.

‘If the asteroid which contributed greatly to the mass extinction 65 million years ago had missed the Earth, perhaps the space-faring species on Earth today would be a dinosaur, not a mammal.’
Another limitation of this tree of life diagram is that it suggests life steadily increased in diversity through time, such that the greatest diversity appears to exist at the present time. This is not at all the case in life history, and only appears that way in this diagram because, for space reasons, only a few of the main branches of life that have gone extinct are shown. The evidence suggests that many more branches have gone extinct than exist today. One estimate concludes that 99% of species that have ever existed on earth are now extinct. If the diagram could be drawn to really reflect life history, the greatest diversity in major body plans would probably appear early in the Cambrian Period, around 530 million years ago. Only a few major body plans survived the Cambrian, but these few have evolved into the diversity we have today.
Sigue leyendo

NASA Releases Awesome Images of Massive Solar Flare Heading Toward Earth [VIDEO]


http://mashable.com

NASA is keeping a close eye on that solar flare that started on Thursday, July 12, and now it’s released dramatic time-lapse video and photos of the flare that’s found its way to Earth.

There’s nothing to fear with this solar dustup — although it’s rated X1.4, barely within the “extreme” range, it’s not expected to cause any damage to electronic equipment, either in orbit or here on terra firma.

However, as we mentioned in our previous post about this latest solar flare, there might be some unusually southern northern lights tonight, so it might be a good idea to go outside and take a look if you live north of New York, Chicago, San Francisco, Barcelona or Paris (approximately 40 degrees North latitude).

Meanwhile, take a gander at these dramatic photos from NASA, showing our mighty Sun having a mild hissy fit:


Ver video
http://mashable.com/2012/07/14/nasa-solar-flare/
Pics and video courtesy NASA

How Responsive Design is Like Water


Written by:  Jamal
http://www.1stwebdesigner.com/

There are three states of matter known to be found on Earth. These states of course being that of solid, liquid, and gas. Taking into account that these three states are distinctly different, it is easy to assume that they each have a unique form. Solids are rigid and tightly packed molecules , gases are hyperactive molecules that are always just bouncing around everywhere, and liquids are closely connected molecules that have no true form.

Before steering away from this post because of the brief refresher on some chemistry notes, which may or may not have triggered haunting blocked out memories, take some time to consider something. Why would any professional creative ever be daft enough to mention anything relating to science subjects like chemistry in a blog post? And how can knowing this honestly improve my responsive design skills?

How Responsive Design is Like Water

Liquid: The Responsive State


*Image Credit: mloge

For the sake of the article, the matter state of liquid will now be referred to as water. Everyone in every part of the world can tell you what water looks like, but have you really noticed it? With all the discussion arising due to responsive design going mainstream, its troubling to see the original responsive design go unnoticed. Let’s take a look at a few examples, while also explaining how they relate to responsive design.

Example 1: Water has no True Form

As aforementioned the state of water is the only one to be fully visible, yet have no exact form. The loosely connected molecules of this state bond together to take the shape of whatever container they are in. In responsive design, the website is meant not to have any true form. Its form depends on the device it is being viewed on, or containing it.

Example 2: When Pressure is Added, Water can be Dangerous

The phrase speed over power never becomes clearer then when dealing with water. Normally, water is in a very nice refreshing state with no harm coming from touching it. However, that can easily change once the right level of pressure is added. Once the right pressure level has been reached, the safe water state quickly turns into a blade sharp enough to cut through almost anything.

In responsive design, the pressure level relates to the use of space on the viewing device . The higher level of space used then what would be considered acceptable, the higher chance the pressure to find the message in said viewing device grows.

Example 3: Water Easily Separates, Without Losing its Identity… Sigue leyendo

There Will Always Be People Who Doubt Your Expertise


by Caleb Wojcik | http://expertenough.com

Throughout history, while experts have been discovering how our world works, other “un-experts” have been continually doubting them every step of the way.

Let’s take a look at the “Flat Earth” theory as an example of extreme doubting:

  • Everyone thought the earth was flat until Pythagoras proved that the earth was round in 6th century B.C.
  • It took another couple hundred years for anyone to actually believe him (Aristotle finally convinced them to believe in it).
  • Over the next two thousand years many parts of the world still considered the earth to be flat.

But here’s the kicker: In 1956, Samuel Shenton started a “Flat Earth” conspiracy group that grew to over 3,000 members by the 1970′s.

The “Flat Earth” theory had been disproven mathematically, astronomically, and scientifically, but some people still didn’t believe that the Earth was a sphere even though when we had already put humans on the moon.

A great lesson can be learned from this story… Sigue leyendo

10 signs that you aren’t cut out for IT


It’s a tough world out there. Anyone who’s ever worked in IT knows just how tough it is. And if you’re not totally up for the challenge, there will always be someone else who is. But for anyone considering getting into the world of IT, or for those considering getting out of IT… how do you know? How do you know whether you are really cut out for the career that chews up and spits out its young? Well, I have a handy list of signs that maybe IT isn’t the best fitfor you.

1: You lack patience

Patience is most certainly a virtue in IT. When some problems strike, they strike with vengeance and most often require a good deal of time to resolve. If you are without patience, you’ll either give up, lose your mind, or pull out all your hair. But the need for patience doesn’t end at dealing with problems. Many times, end users will test your patience more than the technology will. If that’s the case, I recommend that you either get away from having to deal with end users or (if that’s not possible), leave IT immediately.

2: You have no desire to continue your education

IT is an ever-evolving field and without the desire to continue learning, you’re already way behind the curve. This is one of those fields where you must be okay with constantly learning something new. That might mean taking a class or attending a workshop or just hitting the books on your own. But no matter how you slice that education, you must be willing to continue to learn.

3: You refuse to work outside 9-to-5

Technology doesn’t adhere to a set schedule. Servers go down whenever they want and business must go on. So you must be willing to wake up in the middle of the night, work long hours during the week, and work weekends. If you’re someone who refuses to let your workweek interfere with your personal life — well, the writing on the wall is pretty clear.

4: You don’t like people… Sigue leyendo

Cruces, Sol y La Imaginación

Cuando la imaginación y la creatividad suman infinito

MarketingActivo

el mundo del marketing se activa para ti

tranquicomix

fanzine bejarano de historietas hecho en los 80

A Stairway To Fashion

contact: ralucastoica23@gmail.com

Vinod833's Blog

This WordPress.com site is the bee's knees

Apasionada de las Redes Sociales

Compartir conocimientos 2.0 y Marketing Online

Zona de Promesas

Tecnología - Internet - Redes Sociales - Entrepreneurship - Música - Economía - Innovación

Top Master | Blog

LOS PROGRAMAS DE MBA Y POSTGRADO MAS INFLUYENTES DE TODO EL MUNDO

La realidad alterna

Diario de sueños, cuentos, poesías y una novela en proceso

TechCrunch

Startup and Technology News

Unencumbered by Facts

Taking unsubstantiation to new levels

Carlos Cordero

Blog de tecnología

PsicoEmocions Blog

Un Pont entre la Psique i les Emocions

TEA PTLS NACHO

AUTISMO.TEA..PTLS

Comunicación & Marketing

De Lilian Lanzieri

Xtratexia

Dirección estratégica para la vida

Silvia Altamirano

An editorial designer that writes

StellarHIRE Partners

Founding Partner, StellarHire Partners - Executive Search Consultants. Recent engagements include Eloqua, SFDC, Tibco and Veeam.

ivanbrunpr's Blog

4 out of 5 dentists recommend this WordPress.com site

Matt on Not-WordPress

Stuff and things.

BLOGTEC

Noticias de Tecnologia.

Talento en Expansión

Tendencias y Mejores Prácticas en la Gestión de Personas de la Empresa 2.0

Two Leaves Tea SPAIN

Great Organic Tea! ✫✫✫✫✫ Te Organico en Piramides

Escuela de Dinero

El mejor Sitio en Español sobre lo básico para entender el Dinero y sus matemáticas relacionadas.

Intentando dejar huella...

...en cada uno de los visitantes

Ideas Para la Clase.com

Portafolio de experiencias en la clase de español para Middle School.

littlegreybox

Travel & Lifestyle Blog

déborah rueda

Un sitio más pero diferente sobre marketing on line

No solo los 80's

La mejor música de la historia

Molly Balloon's Blog

Identity + Dressing + Colour

El OJO PUBLICO. / Глаз общественности

Ver para contar & contar para ver. / Чтобы рассказать

Think Creative Idea

Marketing, publicidad, web y negocios

Social Media y más

Social Media, Redes Sociales, Marketing, SEO

The Coaching Alliance

El camino hacia el éxito

Luces y sombras de las marcas

Social Media, Marketing y Comunicación

CNN en Español: Ultimas Noticias de Estados Unidos, Latinoamérica y el Mundo, Opinión y Videos

Ultimas Noticias de Estados Unidos, Latinoamérica y el Mundo, Opinión y Videos

Javier GM Photography - México y más.

“Un fotógrafo tiene que ser auténtico y en su obra, debe expresar emociones, provocar reacciones y despertar pasiones.” ~ Javier García-Moreno E.

Natalia Gómez del Pozuelo

Experta en comunicación y oratoria

aloyn

Alimentación, ocio y negocios, ALOYN, es un Grupo dirigido a Directivos y Propietarios de empresas, interesados en el mundo de la industria de alimentación y bebidas. Tanto por la parte de la industria productora como por la parte de la industria consumidora y/o distribuidora (Distribución Comercial, Horeca, Vending, Venta Directa, etc). También nos interesan las actividades ligadas al agroturismo y el enoturismo como magníficas actividades de promoción y difusión de la cultura gastronómica.

Blog de Jack Moreno

Un blog de Joaquín Moreno sobre recursos, literatura y ciencia ficción

Mashamour

Ensalada de Manjares

Infographic List

For those who love Infographics - www.infographiclist.com

URieLaRtE

hay que ser libre para ser uno mismo

Seguir

Recibe cada nueva publicación en tu buzón de correo electrónico.

Únete a otros 5.668 seguidores

A %d blogueros les gusta esto: