Alef Janguas Da Costa

41 Flips | 1 Magazine | 2 Likes | 4 Following | @alefdacosta | Keep up with Alef Janguas Da Costa on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Alef Janguas Da Costa”

When people say that Ukraine looks apocalyptic right now, they aren't joking

Available on iOS & Android only.<p>Tag<p>This is sensitive<p>Attribute original poster<p>We remove posts that include copyright or trademark infringement. If …

This explains the creepy guy in my nightmares

Available on iOS & Android only.<p>Tag<p>This is sensitive<p>Attribute original poster<p>We remove posts that include copyright or trademark infringement. If …

Squeak squeak squeak squeak

Available on iOS & Android only.<p>Tag<p>This is sensitive<p>Attribute original poster<p>We remove posts that include copyright or trademark infringement. If …

A Brief History Of Quantum Mechanics

Quantum Mechanics

Mulher é um bicho complicado… Ainda mais quando está ovulando!

“Mulher é muito complicada!” Todo mundo já ouviu essa frase pelo menos uma vez na vida. E mulher é complicada mesmo! Uma hora ela quer uma coisa. …

Superinteressante on Twitter: "Na natureza, ser feio pode ser o segredo da sobrevivência. Olha só: http://t.co/2tsv43kZJq http://t.co/IyKwTn2Y0o"

New conversation<p>Replying to @<b>revistasuper</b><p>RIBÉRY IMORTALRT@revistasuper:Na natureza, ser feio pode ser o segredo da sobrevivênciaOlha …

EXAME

Pequim – A sonda não tripulada chinesa Chang E3 pousou neste sábado na cratera lunar Sinus Iridum, o que transforma o país asiático no terceiro, após …

Log In or Sign Up to View

This Facebook post is no longer available. It may have been removed or the privacy settings of the post may have changed.

Destro ou canhoto? Encontrados os genes que determinam a mão dominante

Uma nova pesquisa sugere que os genes que desempenham um papel na orientação dos órgãos internos também podem determinar se alguém é destro ou …

Os 5 segredos da felicidade segundo a ciência

Para nós, psicólogos que estamos sempre viajando de avião, a maneira como descrevemos nossa profissão para o vizinho de assento é determinante para …

Sperm Race Human mating behavior may be full of heartbreak, joy and the occasional tearful argument, but it’s pretty tame compared to the sexual drama that takes place elsewhere in the animal kingdom. Case in point: the fluorescent sperm above, from two different male fruit flies, racing through a female to try and be the one that carries its genes on to the next generation. In much of the animal world, females often have the chance to mate with more than one male, and males will in turn mate with many females. That increases everyone’s odds of successfully reproducing and makes the population more genetically diverse, both good evolutionary strategies. Each side has some biological tricks up their sleeve. Males will employ sexual self-defense in order to give their sperm a better chance at winning the race. After mating, for instance, fruit flies secrete proteins that attack competitors’ sperm. And human penises are actually shaped in a way that physically removes other males’ semen, if you catch my drift. Males also have to find an evolutionary balance between making more sperm (which costs a lot of energy) for fewer females or mating with more females using less sperm each time. Over time, males also tend to evolve faster sperm (which is harder than it sounds thanks to physics). It’s not all up to males, of course. Females of some duck species have evolved vaginas full of dead ends and corkscrews that help defend against forced copulation by over-eager males. Females of some species (like the fruit flies above) can even store sperm in special ducts until they see fit to let the right male in, a trick called cryptic female choice. It’s a literal battle of the sexes, and this is just the tip of the iceberg. For more, check out the Wikipedia page for sexual selection, Isabella Rosselini's Green Porno series, and Carin Bondar's Wild Sex show. Hey, it’s not PG-13 if it’s for science, right?

<b>Sperm Race</b><p>Human mating behavior may be full of heartbreak, joy and the occasional tearful argument, but it’s pretty tame compared to the sexual drama …

Seeing A Hydrogen Bond Using a mouthful of a technique called high-resolution atomic force microscopy, Chinese researchers have imaged a hydrogen bond at the highest resolution evar (except for maybe crystallography, but that’s a much more indirect way to look at things). These molecules (a tetrad of 8-hydroxyquinoline) are held in arrangement by the (white) hydrogen atoms’ atomic attraction to the partial negative charge in the nitrogen and oxygen atoms. Those N’s and O’s are little electron hogs, pulling that negative cloud away from their atomic neighbor and around their nucleus instead. They don’t become full ions, like sodium or chloride, but they do become just a tiny bit negative. It’s similar to what happens in water, where the “electron hog” oxygen becomes slightly negative, making the hydrogen slightly positive: This results in something called “dipole interaction” and it is one of the key ingredients of living chemistry. In fact, if those 8-hydroxyquinoline molecules were in a cell instead of on a copper microscope surface, there would be little water molecules bridging those gaps, tiny hydrogen bonding intermediaries holding the whole aqueous world together. This kind of microscopy is the same technique that recently let Berkeley scientists see a covalent bond breaking and forming in real time, and is certainly up there on the “coolest thing I’ve seen this year” list. Next stop ionic bonds?

<b>Seeing A Hydrogen Bond</b><p>Using a mouthful of a technique called <b>high-resolution atomic force microscopy</b>, Chinese researchers have imaged a hydrogen bond …

How halloumi took over the UK

<b>Until recently halloumi was a niche food in the UK. Now it's a staple of the British barbecue season. How did it become so popular?</b><p>To some it is "squeaky cheese".<p>To others it is a pleasantly rubbery addition to salads, while for vegetarians it's that thing on barbecue skewers that they have to …

8CRAP

Imortalidade: novo projeto do Google quer tornar os seres humanos imortais

Os cientistas já conseguiram inverter o envelhecimento em alguns experimentos. A imortalidade está sempre presente na mitologia, mas poderá ser …

iPhone 5s pode ser desbloqueado com mamilos

O novo sensor do iPhone 5s é bastante sensível – tanto que pode ser desbloqueado até por um mamilo. Isso mesmo: se o usuário quiser variar e achar …

Livres Pensadores

Onde o mundo protestou nas últimas três décadas

Pesquisador levanta localidades e motivos e coloca no mapa as intifadas, a queda do muro de Berlim, a Primavera Árabe, os protestos de Wall Street do …

Schools' tricks to inflate science grades revealed

<b>Tricks used by some schools in England to inflate GCSE science results were revealed at a conference on Wednesday.</b><p>Some schools switch weaker pupils to BTecs, coursework-based vocational qualifications equivalent to GCSEs, and falsify their marks, claims research.<p>Author Birendra Singh spent five …

Sleep 'boosts brain cell numbers'

<b>Scientists believe they have discovered a new reason why we need to sleep - it replenishes a type of brain cell.</b><p>Sleep ramps up the production of cells that go on to make an insulating material known as myelin which protects our brain's circuitry.<p>The findings, so far in mice, could lead to insights …

Série de animações da USP mistura ciência e rock’n’roll

Astrônoma se inspirou no próprio filho para lançar animações que ensinem ciência e espírito crítico para jovens<p>Qual é a melhor forma de despertar …

A polêmica continua: pesquisadores afirmam que jogar videogame faz bem para crianças

O videogame possui uma reputação similar à do ovo, do café e das bebidas alcoólicas: faz bem, faz mal, só um pouquinho, de vez em quando etc. A …