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Monday, June 24, 2013
Sunday, June 23, 2013
Okay, Yeah The Surface Of Venus Looks Really Hot
It's kind of hard to scope things out on Venus because the surface probes we send get obliterated pretty quickly by the heat. Pictures of Venus' surface do exist, though, and this one shows "large circular domes" that look pretty darn hot. The domes are thought to be magma erupting through vents, in a process that happens on Earth too, called volcanism. Get it? Volcanoes? Get it? Okay. Moving on.
The Magellan spacecraft circled Venus from 1990 to 1994 and used radar to map its surface. The picture above is computer generated based on those data. To get a sense of scale, the circular domes on Venus are estimated to be about 15.5 miles across, so we're not talking about some little magma bubble here. How long until Earth is just as inhospitable? [APOD]
Source: http://gizmodo.com/okay-yeah-the-surface-of-venus-looks-really-hot-548934139
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Nationals' Harper uncertain about rehab timeline
WASHINGTON (AP) ? Nationals outfielder Bryce Harper is not convinced he can begin a rehab assignment as quickly as his manager believes.
Davey Johnson had said Friday that he expects Harper to start a rehab stint Tuesday at Class A Potomac. Harper, who has been sidelined since May 26 with left knee bursitis, said he thought he needed an extra day or two.
"It just depends how I feel today and tomorrow," Harper said before Saturday's game against the Colorado Rockies. "Monday is an off day, which is good. Tuesday, that's kind of early. I'm thinking Wednesday or Thursday, maybe."
Reporters later informed Johnson of Harper's comments during the manager's pregame media session.
"I'll have a conversation with him about that," Johnson said. "When a player starts playing, it's really up to me, what I think they need. Not up to the player. I'm always trying to do what's best for the player. But at the same time, it's my job to know when they're ready and when they're not."
Entering Saturday, Harper has missed 29 of the Nationals' 73 games. The NL Rookie of the Year ran in the outfield and took swings in the indoor batting cage the previous two days.
"Running after a ball and running on the bases and hitting, I'm full speed, every single day," Harper said. "It's going to be hard playing at 70 percent if they want me to play at 70 percent. I'm not going to do that. I want to come back 100 percent and get back as quick as I can."
Johnson: "The most I'm concerned about is is (Harper) going to be able to bounce back after playing a nine-inning game? He's probably worried about timing and everything being letter-perfect. All that changes from if you're in Potomac. You may never get your timing there because it's a whole new ballgame there, guys don't have command as well as they do up here, and there's a big variation in how they pitch to guys.
"So I'm more concerned about just how they recover from when they come off the DL than I am about what they hit. Since he's never really been on the DL or done rehab, I think his concept might be different from mine."
Before his managerial career, the 70-year-old Johnson played in the majors for 13 seasons.
"I trust players too. They know more about their body than the medical staff," Johnson said. "But when you come back from injury, are you ever 100 percent? But the body has a wonderful ability to heal itself. The more you get the blood flowing, the more you have to heal. Let's get off the DL, guys."
Despite the missed games, Harper, batting .287, remains tied with Ian Desmond for the team lead in home runs with 12.
"It's still going to be sore the whole year, I feel like," Harper said of his left knee. "But daily, it's getting better. I have no pain, which is good. I'm a little sore everywhere else, but that's common. It's good to have no pain finally. To run with zero pain is going to feel great."
Washington has struggled without its left fielder, but their current three-game winning streak has moved the Nationals one game above .500 at 37-36.
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5 million videos uploaded to Instagram in just 24 hours
NEW YORK (Reuters) - Investigators have found what they believe are human remains in a search of the former home of late New York mobster Jimmy Burke, suspected mastermind of the 1978 Lufthansa cargo heist, New York City Medical Examiner spokeswoman Ellen Borakove told Reuters on Thursday. She said the medical examiner's Office is checking material FBI agents scouring the Queens home found a day earlier, and it appears they are human remains. "I think they are," Borakove said, declining to comment further. ...
Source: http://news.yahoo.com/5-million-videos-uploaded-instagram-just-24-hours-040050714.html
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Saturday, June 22, 2013
Why closely related species do not eat the same things
June 21, 2013 ? Closely related species consume the same resources less often than more remotely related species. In fact, it is the competition for resources, and not their kinship, which determines the food sources of the species of a community. Under the effect of this competition, closely related species have specialized on different food resources. This is the conclusion of a study carried out by researchers from CNRS, the Mus?um National d'Histoire Naturelle and Exeter University (United Kingdom). These results were obtained by studying trophic interactions between species at an extraordinary level of detail in an English meadow.
Published on 20 June 2013 in the journal Current Biology, the work provides important insights into the evolution of ecological communities at a time when certain are being disrupted by climate change and the arrival of invasive species.
In ecology, the present paradigm considers that kinship relations between species determine the identity of the partners with which the species interact: the more closely related the species, the more chance they have of interacting with the same partners. Thus, according to this view, two closely related species should share the same predators and the same preys. Recent work carried out by a team of researchers from CNRS, the Mus?um National d'Histoire Naturelle and Exeter University shows that this is not necessarily the case. For the first time, the scientists have shown that although kinship between species effectively determines what feeds on species, it is competition for resources and not degree of kinship that determines what species feed on.
To arrive at this conclusion, they made a series of observations over a ten-year period in a meadow in the south east of England. These observations, carried out at an extraordinary level of detail, made it possible to establish the interactions between one hundred or so species situated on four trophic levels: plants (23 species), aphids that feed on these plants (25 species), wasps that lay their eggs in the bodies of the aphids (22 species), and other wasps that lay their eggs in the larvae of the preceding wasps inside aphids (26 species).
The researchers have shown that two closely related species of aphid, for example, are generally the prey of the same species of wasp. It is thus the kinship of species that determines the identity of their predators. On the other hand, these two closely related species of aphid do not necessarily feed on the same plants. Going up the food chain, the scientists observed that there was little chance that the most closely related wasps feed on the same species of aphid. This is explained by the fact that under the pressure of competition for food sources, closely related species diversify what they feed on, which has the effect of reducing competition. It was possible to reach this conclusion thanks to the level of detail of the observations made, enabling dynamics to be revealed at a very local scale.
At a time when global warming is creating an imbalance in communities and when numerous species are invading ecosystems to which they were previously alien, these conclusions need to be taken into account if it is wished to predict the new interactions that will result from such changes. In fact, these results show that the resources consumed by a species joining a community cannot be predicted by its kinship relations with those species already present.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/~3/yZyIR8b4HWQ/130621104336.htm
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Old Ideas Are Better Than The Idea You Just Thought Of
Editor's note:?Jake Knapp is a design partner at Google Ventures. It drives me crazy every time I hear about Mailbox, the fancy-pants email app that Dropbox bought for a gazillion dollars. I mean, come on, it?s such an obvious idea -- the app?s killer feature is "email snoozing."?It?s basically organized procrastination, and it?s been around since David Allen?s Getting Things Done, if not longer. There?s even been a plug-in called Boomerang?for years that allows you to snooze your email in the browser. I could have taken that old idea, quit my job and made my own beautiful email-snoozing iPhone app. And then I would have been rolling around atop piles of thousand-dollar bills in Dropbox?s fancy headquarters.?It?s aggravating.Source: http://feedproxy.google.com/~r/Techcrunch/~3/cRdluSfjx4Q/
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