ideonexus writes "Take a crowd of people and have them guess how many jelly beans are in a jar, and the average of their answers will be remarkably accurate. Now researchers have found the same goes for asking one person to guess about the same thing several times. Accuracy improved when the individual was given longer periods of time between guesses." The anonymous author of the Economist piece, not quoting the researchers, says the finding bolsters the "generate and test" model of creative thinking.Read more of this storyat Slashdot.

  Dekortage writes "The US Bureau of Land Management, overwhelmed by applications for large-scale solar energy plants, has declared a two-year freeze on applications for new projects until it completes an extensive environmental impact study. The study will produce 'a single set of environmental criteria to weigh future solar proposals, which will ultimately speed the application process.' The freeze means that current applications will continue to be processed — plants producing enough electricity for 20 million average American homes — but no new applications will be accepted until the study is complete. Solar power companies are worried that this will harm the industry just as it is poised for explosive growth. Some note that gas and oil projects are booming in the southwestern states most favorable to solar development. Another threat looming over the solar industry is that federal tax credits must be renewed in Congress, else they will expire this year."Read more of this storyat Slashdot.

  Iddo Genuth writes to tell us that researchers at the Scripps Research Institute in San Diego have created two artificial DNA bases in an effort to "expand biology's potential." "In the future, [chemist Floyd] Romesberg envisions manipulating the genetic code of bacteria in order to assemble better drugs or even man-made proteins. Until now, the bases only work in bacteria, so human augmentation is currently not possible. Another option is to use alpha and beta to help construct nanomachines to be used for drug delivery. 'This is like jumping from the Stone Age to the Bronze Age,' Romesberg says. 'It takes time to figure out how best to use metal.'" Update 18:10 GMT by SM: Roger writes to share the NewScientist link with a bit more information. There is also the original release text for consideration.Read more of this storyat Slashdot.

  phobos13013 writes "Recently released evidence is showing the North Pole ice is melting at the highest rate ever recorded. As a result, the Pole may be completely ice-free at the surface and composed of nothing but open water by September. As reported in September of last year, the Northwest Passage was ice-free for the first time known to man. The implications of this, as well as the causes, are still being debated. Are global warming experts just short-sighted alarmists? Are we heading for a global ice age? Or is the increase in global mean temperature having an effect on our planet?"Read more of this storyat Slashdot.

  Tjeerd writes "There is currently a discussion going on in the Netherlands about embryo selection. The process means that when using in vitro fertilization, you can check what kind of genetic defects will definitely become activated during life. When embryos with those defects are identified, they can be avoided or destroyed. The next step the government is considering is to make it possible to select against genetic defects which might become active in life, such as breast and colon cancer. Of course, this is a very difficult discussion; where do you start, and where do you end? People are worrying that there is no real limit, and that you could potentially check for every genetic defect. I think if you're in a situation where you or your family have genetic defects, you surely want to check whether your children would have them too. What does the Slashdot community think about this?"Read more of this storyat Slashdot.

  swestcott brings us a story from Space.com about the possibility of finding evidence for ancient Earth life on the moon. A team of scientists has published work confirming that meteorites originating from Earth could have remained sufficiently intact while colliding with the moon to allow the survival of biological evidence for life. Quoting: "Crawford and Baldwin's group simulated their meteors as cubes, and calculated pressures at 500 points on the surface of the cube as it impacted the lunar surface at a wide range of impact angles and velocities. In the most extreme case they tested (vertical impact at a speed of some 11,180 mph, or 5 kilometers per second), Crawford reports that 'some portions' of the simulated meteorite would have melted, but 'the bulk of the projectile, and especially the trailing half, was subjected to much lower pressures.'"Read more of this storyat Slashdot.

  Ars Technica is running a story about recently enacted legislation in Louisiana which will allow school board officials to "approve supplemental classroom materials specifically for the critique of scientific theories" such as evolution and global warming. The full text of the Act (PDF) is also available. Quoting: "The text of the [Louisiana Science Education Act] suggests that it's intended to foster critical thinking, calling on the state Board of Education to 'assist teachers, principals, and other school administrators to create and foster an environment within public elementary and secondary schools that promotes critical thinking skills, logical analysis, and open and objective discussion of scientific theories.' Unfortunately, it's remarkably selective in its suggestion of topics that need critical thinking, as it cites scientific subjects 'including, but not limited to, evolution, the origins of life, global warming, and human cloning.'"Read more of this storyat Slashdot.

  WSJdpatton writes "Fishing in the stream of consciousness, researchers now can detect our intentions and predict our choices before we are aware of them ourselves. The brain, they have found, appears to make up its mind 10 seconds before we become conscious of a decision — an eternity at the speed of thought. Their findings challenge conventional notions of choice, writes WSJ's Robert Lee Hotz."Read more of this storyat Slashdot.

  arbitraryaardvark writes "Physorg reports that NASA will launch a solar sail around the end of July. It'll be the first of its kind; a previous attempt blew up. It's a small proof-of-concept gizmo, not a full-on spaceyacht. Solar sails operate on photon pressure from sunlight. They are well known to science fiction readers, otherwise not so much." C-net has coverage, too.Read more of this storyat Slashdot.

  Human judgment by referees is increasingly being supplemented (and sometimes overridden) by computerized observation systems. nuke-alwin writes "It is obvious that any model is only as accurate as the data in it, and technologies such as Hawkeye can never remove all doubt about the position of a ball. Wimbledon appears to accept the Hawkeye prediction as absolute, but researchers at Cardiff University will soon publish a paper disputing the accuracy of the system."Read more of this storyat Slashdot.

  wooferhound writes "In a move to make the heavy-lift vehicle more robust (predicting an increased launch thrust requirement) to send four astronauts, a lunar lander plus supplies, NASA has announced the Ares V rocket will be beefed up to cater for our future needs to get man back to the Moon. This huge vehicle is now designed to carry payloads of over 156,600 lb (71,000 kg), some 15,600 lb (or 10%) more than the original concept. Ares V was originally designed to be approximately the same length as the original Saturn V lunar rocket (361 feet or 110 metres long), but to accommodate an extra booster engine and extra payload volume, Ares V will be 381 feet (116 metres) long. This upgrade will be capable of sending far more instrumentation into space, an extra 15,600 lb (7,000 kg, or the equivalent mass of a male African elephant)."Read more of this storyat Slashdot.

  Socguy writes "A Russian art curator, Elena Basner, is claiming to have a foolproof method for determining whether or not particular paintings have been created since 1945. She claims that isotopes released into the environment by man-made nuclear explosions have found their way into types of the natural oils used to make paints."Read more of this storyat Slashdot.

  TaeKwonDood tips us to news that a new cancer resistance treatment is going into clinical trials after being quite successful at eradicating cancer in mice. Researchers discovered that certain white blood cells called granulocytes from cancer-immune mice were able to cure cancer in other mice. Now, doctors are putting out the call for healthy granulocyte donors in order to test how well it works on humans. The article quotes lead researcher Zheng Cui saying, "In mice, we've been able to eradicate even highly aggressive forms of malignancy with extremely large tumors. Hopefully, we will see the same results in humans. Our laboratory studies indicate that this cancer-fighting ability is even stronger in healthy humans."Read more of this storyat Slashdot.

  kilrathu writes "Longtime proponents of using video games as sources of learning, the Federation of American Scientists put its money where its mouth is. FAS released Immune Attack, an educational video game designed to teach immunology to AP level high school students and combines the most current research on teaching methodologies with a 3D first-person shooter game. 'The key to the game was making sure it was fun while also covering accurate and complex immunology topics,' said Dr. Michelle Lucey-Roper, director of the FAS Learning Technologies Program. The game is free, although not open source, and can be downloaded here. Sorry, no Mac version yet."Read more of this storyat Slashdot.