Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
Check out the new SourceForge HTML5 internet speed test! No Flash necessary and runs on all devices. ×

Submission + - world's blackest "spray paint" (newatlas.com)

turkeydance writes: Sometimes, regular black just isn't good enough. If you're building an ultra-sensitive space telescope, for instance, you want to minimize reflections within that device as much as humanly possible. That's why Surrey NanoSystems released its Vantablack coating two years ago. Now, in order to expand its possible applications, the material is available in a convenient spray-on form.

Clients can have Vantablack S-VIS applied by Surrey NanoSystems, or they can license the technology for their own production facilities. So no, you can't just buy a can to paint your car.

Submission + - Early explorer logbooks reveal sea ice have not changed in 100 yrs (sciencealert.com) 3

bricko writes: Early explorer logbooks reveal Antarctic sea ice has barely changed in 100 years

Logbooks from the likes of Captain Robert Scott and Sir Ernest Shackleton — key figures in the 'Heroic Age' of Antarctic exploration — have revealed that sea ice levels in Antarctica have barely changed over the past century, despite global temperatures hitting record highs year after year.

Submission + - You Can Now Rent a Mirai Botnet of 400,000 Bots (bleepingcomputer.com)

An anonymous reader writes: Two hackers are renting access to a massive Mirai botnet, which they claim has more than 400,000 infected bots, ready to carry out DDoS attacks at anyone's behest. The hackers have quite a reputation on the hacking underground and have previously been linked to the GovRAT malware, which was used to steal data from several US companies.

Renting around 50K bots costs between $3,000-$4,000 for 2 weeks, meaning renting the whole thing costs between $20,000-$30,000. After the Mirai source code leaked, there are countless of smaller Mirai botnets around, but this one is the biggest, accounting for more than half of all infected IoT devices. This is also the botnet that supposedly shut down Internet access in Liberia.

The original Mirai botnet was limited to only 200,000 bots because there were only 200,000 IoT devices connected online that had their Telnet ports open. The botnet that's up for rent now has received improvements and can also spread to IoT devices via SSH, hence the 400,000 bots total.

Submission + - Why the EU Mars lander Schiaparelli Crashed (esa.int)

wooferhound writes: As Schiaparelli descended under its parachute, its radar Doppler altimeter functioned correctly and the measurements were included in the guidance, navigation and control system. However, saturation – maximum measurement – of the Inertial Measurement Unit (IMU) had occurred shortly after the parachute deployment. The IMU measures the rotation rates of the vehicle. Its output was generally as predicted except for this event, which persisted for about one second – longer than would be expected.
When merged into the navigation system, the erroneous information generated an estimated altitude that was negative – that is, below ground level. This in turn successively triggered a premature release of the parachute and the backshell, a brief firing of the braking thrusters and finally activation of the on-ground systems as if Schiaparelli had already landed. In reality, the vehicle was still at an altitude of around 3.7 km.

Submission + - SPAM: Scott & Shackleton logbooks prove Antarctic sea ice not shrinking for 100 ye

schwit1 writes: Antarctic sea ice had barely changed from where it was 100 years ago, scientists have discovered, after poring over the logbooks of great polar explorers such as Robert Falcon Scott and Ernest Shackleton.

Experts were concerned that ice at the South Pole had declined significantly since the 1950s, which they feared was driven by man-made climate change.

But new analysis suggests that conditions are now virtually identical to when the Terra Nova and Endurance sailed to the continent in the early 1900s, indicating that declines are part of a natural cycle and not the result of global warming.

Link to Original Source

Submission + - Switching to Ubuntu (system76.com)

An anonymous reader writes: If you are just coming to Ubuntu from Apple, it can be a little confusing where everything is. Some software will have the same names, while some tasks need different software. Generally, all operating systems accomplish the same functions: running programs, managing files, installing software, watching funny cat videos, sending email, and low-level functions, such as networking, keyboard input, and displaying images.

Submission + - SPAM: Irina Rodnina, Former Russian Skater Who Lit Olympic Flame, Tweeted Racist Obam

FowlerAtkinson95 writes: No matter whether you happen to be hunting for a great organization to be your date for the evening or someone to bring with you although visiting all the nooks and corners of St.Petersburg, these fine ladies can maintain up. Are you searching for an eye candy to show off to a party? At about this point in the move Harris declares triumphantly, King Kong ain't got nothin' on me! At the climax, searching for revenge for a courier Harris had killed, Russian mobsters murder Harris at the airport. You will be able to pick a Russian escort girl who work in
Link to Original Source

Submission + - Donald Trump Child Rape Victim's Story Was Completely Fabricated (inquisitr.com) 9

Okian Warrior writes: The Donald Trump child rape victim’s story, as revealed early this morning by Daily Mail, is a work of complete fiction.

Katie Johnson herself spoke with journalists about why she lied and made herself into the Donald Trump child rape victim. “We would have a rapist in the White House. I would feel horrified every single day if I stay in this country,” she said, making it apparent that, although the GOP-running presidential hopeful never sexually assaulted her, she still believes he’s a rapist.

Katie maintains that she was sexually abused on more than one occasion by Jeffrey Epstein during mid-1994. A separate informant told Daily Mail that her story “had been believable and compelling right up until the last minute,” when it was found out “Donald Trump’s name had been inserted into this, [and] he was not involved whatsoever.”

Submission + - Despite Push, 32 States Saw Fewer Than 100 Additional AP CS Exams Taken in 2016

theodp writes: In conjunction with the widely-publicized Hour of Code event at the White House in Dec. 2014 (at which President Obama learned to code), a WH Fact Sheet announced commitments to expand computer science offerings to "millions more students." So, one might have expected to see a nice bump in the number of Advanced Placement Computer Science exam takers — a measure often cited as a barometer of CS education success — in the following 2015-2016 school year. Preliminary 2016 AP data released in July was presented as evidence that AP CS is the "fastest growing course of the decade," but the number of AP CS test takers in 2016 was only 8,035 higher than the year before (there are 16+ million HS students). And state-level AP CS exam numbers released last week by the College Board showed that more than 90% of the increase was attributable to 18 states — the other 32 states registered incremental gains of fewer than 100 exams in 2016 (an average of 20 exams/state), and 6 of those actually saw slight declines. And like last year, the data again showed wide differences in adoption and success along gender and ethnicity lines (data, VBA scraping code here).

Submission + - SPAM: Just 2 weeks in the mountains can change your blood for months

schwit1 writes: The human body begins adapting to high-elevation environments as quickly as overnight, and these biological changes can last for months — even after the person has returned to lower elevations.

For the first time ever, scientists comparing the blood of mountain hikers have observed how multiple changes affect the red blood cells' ability to retain oxygen in low-oxygen environments — and it happens within hours.

The find contradicts an assumption that’s lasted for half a century suggesting that humans in high-altitude environments start producing new red blood cells that are more capable of supplying oxygen to their muscles and organs than the average human’s blood.

Link to Original Source

Slashdot Top Deals

A rolling disk gathers no MOS.