An anonymous reader writes "Street lights are an important part of our urban infrastructure — they light our way home and make the roads safe at night. But what if we could create natural street lights that don't need electricity to power them? A group of scientists in Taiwan recently discovered that placing gold nanoparticles within the leaves of trees causes them to give off a luminous reddish glow. The idea of using trees to replace street lights is an ingenious one — not only would it save on electricity costs and cut CO2 emissions, but it could also greatly reduce light pollution in major cities."

crudmonkey writes "Researchers have discovered a biological shocker: female boa constrictors are capable of giving birth asexually. But the surprise doesn't end there. The study in Biology Letters found that boa babies produced through this asexual reproduction — also known as parthenogenesis — sport a chromosomal oddity that researchers thought was impossible in reptiles. While researchers admit that the female in the study may have been a genetic freak, they say the findings should press researchers to re-think reptile reproduction. Virgin birth among reptiles, especially primitive ones like boas, they argue may be far commoner than ever expected."

Martin Hellman writes "A few weeks ago Popular Mechanics awarded one of its Breakthrough Awards for the invention of 'programmable magnets.' Instead of having a single North or South pole, these clever devices have an array of North and South poles. If a matching device with exactly the same array is aligned with the first one, they will experience strong repulsion, just like two single North poles do when brought near one another. If the matching device has the complementary array (North and South interchanged), with correct alignment the two devices will attract. But a slight misalignment will cancel most of the force. Other configurations are possible as well, allowing frictionless magnetic gears and exploding toys. The inventor, Larry Fullerton, used techniques similar to those from CDMA modulation. (Watch the intro video for a brief explanation. While I don't understand magnetism that well, I do understand CDMA and carrying over those ideas to magnetic arrays does make sense to me.)"

MMBK writes "It's the ultimate salvagepunk experiment, building a telegraph out of things found in the woods. From the article: 'During the summer of 2009, artist Jamie O’Shea of the organization Substitute Materials set out to test whether or not electronic communication could have been built at any time in history with the proper knowledge, and with only tools and materials found in the wilderness of New Jersey.'"

sciencehabit writes "Astronomers report that a small asteroid located in the inner asteroid belt between Mars and Jupiter took a major hit early last year. Previously rendered only in artists' conceptions, the first asteroid collision known in modern times revealed itself in a tail of debris streaming from what astronomers at first assumed was a comet. Instead of a steady stream of dust, however, they found boulders near the object with dust moving away from them."

1 a bee writes "CNN is reporting that China is attempting to block all communication regarding Peace prize winner Liu Xiaobo. Even texting is affected: 'Text-messaging on mobile phones is not immune from censors, either. A Shanghai-based netizen, @littley, tweeted his unfortunate experience: "My SIM card just got de-activated, turning my iPhone to an iPod touch after I texted my dad about Liu Xiaobo winning the Nobel Peace Prize."' Might as well add Slashdot to the censored list." Further coverage is available from NBC.

Many Catholic religious orders are participating in a long range Alzheimer's disease study. Rush University's Religious Orders Study began in 1993 and tracks the participants' mental abilities through yearly memory testing. In addition to the annual tests, the study subjects agree to donate their brains. From the article: "The researchers sought members of religious orders, hoping they would be willing to donate and would not have children or spouses interfering with that arrangement at the last minute. More than 1,100 nuns, priests and brothers across the country representing a wide range of ethnic groups are taking part."

A pair of enterprising Swedish schoolgirls ended up in court after they were caught bugging their teachers break room. The duo hoped they would hear discussions about upcoming tests and school work, allowing them to get better grades. It worked until one of them decided to brag about it on Facebook, and the authorities were called in. The girls were charged with trespassing and fined 2,000 kronor ($270) each in Stockholm District Court.

Channard writes "While there have been occasional reports of previous PS3 firmware upgrades causing system crashes and so forth, Sony's new firmware upgrade for the system, 3.41, is apparently stopping PS3 owners from upgrading their hard disks. This problem has been encountered by many users on Sony's forums and occurs when you try to put a new hard disk into a PS3 that already has the firmware upgrade installed. The general course of action for upgrading a PS3's drive is that you download the latest PS3 firmware onto a memory stick and, after swapping the hard drive in the PS3, plug the stick in, allowing the PS3 to properly prepare the disk for use. But as of upgrade 3.41, the PS3 fails to recognize the firmware on the stick, complaining that it can't proceed until you insert the correct firmware. Repeating the process and re-downloading the firmware does not fix the problem, as I can confirm, having encountered the problem myself. Users can put the old hard disk back in, provided they've not reformatted it for some other purpose, so all is not lost. Sony have apparently told gaming website CVG that 'The information available to our Consumer Services Department does not suggest that this is a problem PlayStation owners are likely to experience when upgrading the HDD with 3.41 update.' This seems to fly in the face of the currently available information — although whether or not this statement was issued by Kevin Butler is unclear. Either way, PS3 owners encountering this problem will likely have to wait a few days for a fix and use their old HDDs for now."

crabel writes "In Java 1.6.0_21, the company field was changed from 'Sun Microsystems, Inc' to 'Oracle.' Apparently not the best idea, because some applications depend on that field to identify the virtual machine. All Eclipse versions since 3.3 (released 2007) until and including the recent Helios release (2010) have been reported to crash with an OutOfMemoryError due to this change. This is particularly funny since the update is deployed through automatic update and suddenly applications cease to work."

eecue writes "The folks at DefCon, the world's largest hacker convention [previously on Slashdot], have been making awesome badges for years. Last year along with the convention badge, a group of hackers known as the Ninjas created an electronic badge for their exclusive party. This year the Ninjas have taken the whole electronic badge thing to the next level with an interactive, wireless, encrypted ninja battle video game badge. I convinced the Ninjas to give Wired.com an exclusive sneak peek, and let me tell you, this thing is awesome."

Gisg writes "The University of Arizona team reported that their genetically modified mosquitoes are immune to the malaria-causing parasite, a single-cell organism called Plasmodium. Riehle and his colleagues tested their genetically-altered mosquitoes by feeding them malaria-infested blood. Not even one mosquito became infected with the malaria parasite."