(Phys.org) —Bioresearcher Andy Reynolds with Rothamsted Research in the U.K., believes he has solved the mystery of how sharks act like math geniuses—they simply turn away from turbulence, he reports in his paper published in the journal Proceedings of the Royal Society A: Mathematical, Physical …
Didn’t realize this was an issue but I’m glad we’ve got this sorted! Great example of nature and math/stats coming together!
A majestic rare albino whale shark graces the ocean
Sometimes, Nature puts on a show that leaves Man awestruck. And these spectacular displays by two denizens of the deep left all who saw them beguiled by their grace and beauty. Divers were stunned by the sight of a 33ft albino whale shark as it glided through the waters off the coast of Darwin, an island in the Galapagos group. (Full Story)
A ‘Ring of Fire’ solar eclipse is a rare phenomenon that occurs when the moon’s orbit is at its apogee: the part of its orbit farthest away from the Earth. Because the moon is so far away, it seems smaller than normal to the human eye. The result is that the moon doesn’t entirely block out our view of the sun, but leaves an “annulus,” or ring of sunlight glowing around it. Hence the term “annular” eclipse rather than a “total” eclipse.
I’m in complete awe.
Hey United Statesians of tumblr, we’re 5 weeks from our mid-term elections. Historically these kinds of elections have low turnout, especially from younger and poorer voters.
The extremists who want to dial back marriage equality, criminalize abortion, and make voting more difficult…
Acoels are perhaps the simplest bilateral animals in the world!
They were initially thought to be flatworms, but molecular research shows their evolutionary roots probably date back to a time before flatworms ever existed.
Even as flatworms they were always quite strange. They have no gut, no kidney-like organs to help excrete waste and no gonads. The cells they use to create eggs and sperm are simply littered about in their internal tissue.
Their remarkable lack of organs hasn’t stopped them gaining success. They can be found relaxing on tropical corals, feasting on the bits of food they find on the surface. Some provide homes for brown, green or red algae and gain nourishment from them. Many crawl around between grains of sand on the sea floor.
Most impressively, there are some who live within cracks and channels within Arctic ice, seeking out algae to feed on.
So much for organs.
I would request that my body in death be buried not cremated, so that the energy content contained within it gets returned to the earth, so that flora and fauna can dine upon it, just as I have dined upon flora and fauna during my lifetime.
Um, these snapchats FTW?
Confession: If this is the exhibit I thnk it is, I saw it once in Maryland but I ran out of it because I found it ABSOLUTELY FREAKING TERRIFYING and that, kids, and the story of approximately half the of reason I am not a biology major.
I’m pretty sure this is the Body Worlds exhibit. I remember that I somehow managed to convince my rather squeamish mother to take me this when I was 8 or so. I was not grossed out at all.
While writing an article about intestinal gasses 17 years ago, Karolinska Institute researchers John Lundberg and Eddie Weitzberg couldn’t resist a punny title: “Nitric Oxide and inflammation: The answer is blowing in the wind”.
Thus began their descent down the slippery slope of Bob Dylan call-outs. While the two men never put lyrics into their peer-reviewed studies, The Local Sweden reports, they started a personal tradition of getting as many Dylan quotes as possible into everything else they wrote — articles about other peoples’ work, editorials, book introductions, and so on.
New findings by scientists at the University of California, Santa Cruz, suggest that an evolutionary arms race between rival elements within the genomes of primates drove the evolution of complex regulatory networks that orchestrate the activity of genes in every cell of our bodies.
The arms race is between mobile DNA sequences known as “retrotransposons” (a.k.a. “jumping genes”) and the genes that have evolved to control them. The UC Santa Cruz researchers have, for the first time, identified genes in humans that make repressor proteins to shut down specific jumping genes. The researchers also traced the rapid evolution of the repressor genes in the primate lineage.
Their findings, published September 28 in Nature, show that over evolutionary time, primate genomes have undergone repeated episodes in which mutations in jumping genes allowed them to escape repression, which drove the evolution of new repressor genes, and so on. Furthermore, their findings suggest that repressor genes that originally evolved to shut down jumping genes have since come to play other regulatory roles in the genome.
Hong Kong’s unprecedented protests & police crackdown, explained
September 29, 2014
Protest marches and vigils are fairly common in Hong Kong, but what began on Friday and escalated dramatically on Sunday is unprecedented. Mass acts of civil disobedience were met by a shocking and swift police response, which has led to clashes in the streets and popular outrage so great that analysts can only guess at what will happen next.
What’s going on in Hong Kong right now is a very big deal, and for reasons that go way beyond just this weekend’s protests. Hong Kong’s citizens are protesting to keep their promised democratic rights, which they worry — with good reason — could be taken away by the central Chinese government in Beijing. This moment is a sort of standoff between Hong Kong and China over the city’s future, a confrontation that they have been building toward for almost 20 years.
On Wednesday, student groups led peaceful marches to protest China’s new plan for Hong Kong’s 2017 election, which looked like China reneging on its promise to grant the autonomous region full democracy (see the next section for what that plan was such a big deal). Protest marches are pretty common in Hong Kong so it didn’t seem so unusual at first.
Things started escalating on Friday. Members of a protest group called Occupy Central (Central is the name of Hong Kong’s downtown district) had planned to launch a “civil disobedience” campaign on October 1, a national holiday celebrating communist China’s founding. But as the already-ongoing protesters escalated they decided to go for it now. On Friday, protesters peacefully occupied the forecourt (a courtyard-style open area in front of an office building) of Hong Kong’s city government headquarters along with other downtown areas.
The really important thing is what happened next: Hong Kong’s police cracked down with surprising force, fighting in the streets with protesters and eventually emerging with guns that, while likely filled with rubber bullets, look awfully militaristic. In response, outraged Hong Kong residents flooded into the streets to join the protesters, and on Sunday police blanketed Central with tear gas, which has been seen as a shocking and outrageous escalation. The Chinese central government issued a statement endorsing the police actions, as did Hong Kong’s pro-Beijing chief executive, a tacit signal that Beijing wishes for the protests to be cleared.
You have to remember that this is Hong Kong: an affluent and orderly place that prides itself on its civility and its freedom. Hong Kongers have a bit of a superiority complex when it comes to China, and see themselves as beyond the mainland’s authoritarianism and disorder. But there is also deep, deep anxiety that this could change, that Hong Kong could lose its special status, and this week’s events have hit on those anxieties to their core.
This began in 1997, when the United Kingdom handed over Hong Kong, one of its last imperial possessions, to the Chinese government. Hong Kong had spent over 150 years under British rule; it had become a fabulously wealthy center of commerce and had enjoyed, while not full democracy, far more freedom and democracy than the rest of China. So, as part of the handover, the Chinese government in Beijing promised to let Hong Kong keep its special rights and its autonomy — a deal known as “one country, two systems.”
A big part of that deal was China’s promise that, in 2017, Hong Kong’s citizens would be allowed to democratically elect their top leader for the first time ever. That leader, known as the Hong Kong chief executive, is currently appointed by a pro-Beijing committee. In 2007, the Chinese government reaffirmed its promise to give Hong Kong this right in 2017, which in Hong Kong is referred to as universal suffrage — a sign of how much value people assign to it.
But there have been disturbing signs throughout this year that the central Chinese government might renege on its promise. In July, the Chinese government issued a “white paper” stating that it has “comprehensive jurisdiction” over Hong Kong and that “the high degree of autonomy of [Hong Kong] is not an inherent power, but one that comes solely from the authorization by the central leadership.” It sounded to many like a warning from Beijing that it could dilute or outright revoke Hong Kong’s freedoms, and tens of thousands of Hong Kong’s citizens marched in protest.
Then, in August, Beijing announced its plan for Hong Kong’s 2017 elections. While citizens would be allowed to vote for the chief executive, the candidates for the election would have to be approved by a special committee just like the pro-Beijing committee that currently appoints the chief executive. This lets Beijing hand-pick candidates for the job, which is anti-democratic in itself, but also feels to many in Hong Kong like a first step toward eroding their promised democratic rights.