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Submission + - Michael Mann: Swifboating comes to science (sagepub.com) 1

Lasrick writes: Michael Mann writes about the ad hominem attacks on scientists, especially climate scientists, that have become much more frequent over the last few decades. Mann should know: his work as a postdoc on the famed "hockey stick" graph led him to be vilified by Fox News and in the Wall Street Journal. Wealthy interests such as the Scaife Foundation and Koch Industries pressured Penn State University to fire him (they didn't). Right-wing elected officials attempted to have Mann's personal records and emails (and those of other climate scientists) subpoenaed and tried to have the "hockey stick" discredited in the media, despite the fact that the National Academy of Sciences reaffirmed the work, and that subsequent reports of the IPCC and the most recent peerreviewed research corroborates it. Even worse, Mann and his family were targets of death threats. Despite (or perhaps because of) the well-funded and ubiquitous attacks, Mann believes that flat-out climate change denialism is losing favor with the public, and he lays out how and why scientists should engage and not retreat to their labs to conduct research far from the public eye. 'We scientists must hold ourselves to a higher standard than the deniers-for-hire. We must be honest as we convey the threat posed by climate change to the public. But we must also be effective. The stakes are simply too great for us to fail to communicate the risks of inaction. The good news is that scientists have truth on their side, and truth will ultimately win out.'

Comment Re: Minor setback (Score 2) 213

I liked David Brin's "Tank Farm Dynamo", which featured a space station made from used external tanks. Part of the premise was that ETs were deliberately discarded the way they were, so that they'd burn on reentry and not become space debris. For negligible cost they could be brought the rest of the way to orbit, available for use there.

Comment Re: Minor setback (Score 2) 213

Every first stage ever made and flown has been simply thrown away after one use. FIrst stages are quite a bit different from whatever is on the top of the stack.

For that matter, "lander on legs" is a different thing on Earth than it is on the moon or Mars.

I will agree that there is a decided anti-NASA attitude around here, though.

Submission + - SpaceX Rocket Landing Test Crashes After Successful Cargo Launch (space.com)

0x2A writes: A Falcon 9 rocket built by SpaceX successfully launched a Dragon cargo ship toward the International Space Station early Saturday— and then returned to Earth, apparently impacting its target ocean platform during a landing test in the Atlantic.
"Rocket made it to drone spaceport ship, but landed hard. Close, but no cigar this time. Bodes well for the future tho," Elon Musk tweeted shortly after the launch.

Submission + - Scientific answers for some of your coffee questions.

BarbaraHudson writes: The National Post is carrying a story about coffee, from human tests to determine the optimal temperature to why coffee served in white mugs tastes more bitter, why coffee rings have a dark outer edge and a lighter inner ring, the best (and worst) times to drink coffee, and of course the now-popular "coffee nap."

Submission + - NASA update will deal with Opportunity flash memory "amnesia"

BarbaraHudson writes: Computerworld has some details on NASA's latest fix to allow the Opportunity Mars Rover to store data while in overnight "sleep mode." Opportunity has been suffering from a glitch that's causing what NASA scientists describe as memory and data loss — or robotic "amnesia" — caused by flash memory deterioration since early December. Currently any information gathered is stored temporarily in RAM and must be sent to Earth so it's not lost when Opportunity powers down.

Submission + - Mystery of why galaxies always appear dustier on one side solved

StartsWithABang writes: If you look at a spiral galaxy face-on, the sweeping spiral arms and the central massive bulge are usually the most prominent features. But if you look at one tilted at an angle to us, dust lanes appear prominently. You might expect that the dust lanes should appear equally on both sides of the galaxy, but they don't. Even more puzzlingly, the dust actually does live in the middle of the disk, so you might think there's no excuse for this! We had a theory as to why this works for a while, but recent Hubble observations have confirmed this picture, and we've finally got our answer!

Comment Re:Leading Edge? (Score 1) 97

First question... Is such a dust cloud inconsistent with a sun-like star somewhere inside the boundaries?
Second question... If a sun-like star can exist there, is such a dust cloud inconsistent with that star having a planetary system like ours?
Third question... Assuming the first two questions pass, and that there could be an Earth-like planet there with life that could look up into the sky and wonder, what would they see?

In other words, is that dust really still a hard vacuum, just seen from a different perspective, or is it really something denser that would alter the view from within?

Comment Re:Stars or noise (Score 2) 97

But the Earth had an oxygen (potentially biosculpted) atmosphere some 500 million years ago. So if someone there has been able to observe Earth and know something about its atmosphere, they'd know that there might be life here. We would count as "interesting".

I've read more recently that there may be other ways to have significant amounts of free oxygen in a planetary atmosphere besides biological processes. I have no idea how probable those ways are compared to life, how stable they are, how "interesting" they are compared to life, etc.

But for the remote sensing schemes we've used on exoplanets, as well as foreseeable improvements to those schemes, Earth would definitely count as "interesting".

Submission + - Pope Francis to Issue Encyclical on Global Warming 1

HughPickens.com writes: The Guardian reports that following a visit in March to Tacloban, the Philippine city devastated in 2012 by typhoon Haiyan, Pope Francis plans to publish a rare encyclical on climate change and human ecology urging all Catholics to take action on moral and scientific grounds. "A papal encyclical is rare," says Bishop Marcelo Sorondo, chancellor of the Vatican’s Pontifical Academy of Sciences who revealed the pope's plans when he delivered Cafod’s annual Pope Paul VI lecture. "It is among the highest levels of a pope’s authority. It will be 50 to 60 pages long; it’s a big deal." The encyclical will be sent to the world’s 5,000 Catholic bishops and 400,000 priests, who will distribute it to parishioners. Within Catholicism in recent times, an encyclical is generally used for significant issues, and is second in importance only to the highest ranking document now issued by popes, an Apostolic Constitution. “Just as humanity confronted revolutionary change in the 19th century at the time of industrialization, today we have changed the natural environment so much," says Sorondo. "If current trends continue, the century will witness unprecedented climate change and destruction of the ecosystem with tragic consequences.”

Francis’s environmental radicalism is likely to attract resistance from Vatican conservatives and in rightwing church circles, particularly in the US – where Catholic climate sceptics also include John Boehner, Republican leader of the House of Representatives and Rick Santorum, the former Republican presidential candidate. “There will always be 5-10% of people who will take offence. They are very vocal and have political clout," says Dan Misleh, director of the Catholic climate covenant. "This encyclical will threaten some people and bring joy to others. The arguments are around economics and science rather than morality." Francis will also be opposed by the powerful US evangelical movement, says Calvin Beisner, spokesman for the conservative Cornwall Alliance for the Stewardship of Creation, which has declared the US environmental movement to be “un-biblical” and a false religion. “The pope should back off,” says Beisner. “The Catholic church is correct on the ethical principles but has been misled on the science. It follows that the policies the Vatican is promoting are incorrect. Our position reflects the views of millions of evangelical Christians in the US.”

Submission + - Designing The Best Board Game (fivethirtyeight.com)

An anonymous reader writes: Twilight Struggle tops BoardGameGeek's ranking of user-rated board games, handily beating classics like Puerto Rico, Settlers of the Catan, and Risk. FiveThirtyEight has an article about the game's design, and how certain design choices can affect enjoyment. Quoting: "Gupta has a few theories about why his game has done so well. For one, it’s a two-player game — the Americans vs. the Soviets. Two-player games are attractive for a couple of reasons. First, by definition, half the players win. People like winning, and are likely to replay and rate highly a game they think they have a chance to win. ... The data offers some evidence for Gupta’s hypothesis. Games that support three players rate highest, with an average of 6.58. But two-player games are a close second, with an average rating of 6.55. Next closest are five-player games, which average 6.39. ... The shortest games are the lowest rated, on average. But players don’t favor length without bounds. Three hours seems to be right around the point of diminishing marginal returns. Another key to the game’s success is its mix of luck and skill."

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