A while ago you had the chance to ask mathematician and theoretical physicist Freeman Dyson about his work in quantum electrodynamics, nuclear propulsion, and his thoughts on the past, present, and future of science. Below you'll find his answers to your questions.

An anonymous reader writes "Yesterday, Russia's Foreign Minister declared that Moscow would not sell any new surface-to-air missiles to Syria, although there is a catch. He said old contracts are being honored. Could old contracts just be code for an already signed, but undisclosed deal for the S-300? Lavarov certainly left the door open: '...when questioned in particular about the S-300, his reply was not clear if the "earlier contracts" were for the S-300 or something else.' With Israeli Prime Minister Binyamin Netanyahu going to the Black Sea town of Sochi early next week for talks with President Vladimir Putin, it seems they may have something to talk about."

An anonymous reader writes "While liquid hydrogen may not be a mainstream fuel for drones, the aerospace industry has said it holds the promise of flight endurance on the order of days, seemingly just another far-fetched aerospace industry pitch ... until now. The Naval Research Laboratory just announced that the Ion Tiger, a diminutive 37-pound airplane with a 17 foot wingspan, flew for 48 hours and 1 minute on liquid hydrogen and a fuel cell (anyone else notice the oddly specific duration? Guess it's better than 47 hours 59 minutes). This is a dramatically different scale than the liquid hydrogen powered 150 foot wingspan Boeing Phantom Eye and 175 foot wingspan AeroVironment Global Observer, which have yet to live up to their multi-day endurance projections. Interestingly enough, the well-known Global Hawk only has an endurance of 33.1 hours, which barely cracks Wikipedia's list of notable UAV endurance flights. Of course, solar-electric airplanes have flown for two weeks continuously, but that sure seems like refueling!"

An anonymous reader writes "As well as providing the equipment necessary to fire missiles, defense contractors also want to offer customers the ability to defend against them. Lockheed Martin is doing just that with its Area Defense Anti-Munitions (ADAM) system. ADAM is a high energy laser system mounted on a trailer allowing it to be transported around quickly to help defend high-value targets. It is still in prototype form, but basically uses a 10-kilowatt fiber laser which can be focused on to a moving target up to 2 kilometers away."

Freshly Exhumed writes "In an unprecedented action, a United States Air Force commander has stripped 17 of his officers of their authority to control and launch nuclear missiles. After a string of failings that the group's deputy commander said stemmed from 'rot' within the ranks, the suspensions followed a March inspection of the 91st Missile Wing at Minot Air Force Base, North Dakota, that resulted in a 'D' grade for the team tested on its mastery of the Minuteman III missile launch operations system. The 17 are being assigned to intensive retraining courses of 60 to 90 days, according to Lt. Col. John Dorrian, an Air Force spokesman."

gbrumfiel writes "North Korea has not been shy in announcing plans to destroy the United States, but questions remain over whether it has the nukes or the missiles to do so. Now NPR reports on open-source intelligence showing that one of the North's most 'advanced' weapons might actually be a decoy. Six KN-08 missiles were paraded last year, but each showed differences in the way they were assembled. Is it all a bluff? Or are the missiles part of a real program?"

wiredmikey writes "A new report from the Pentagon marked the most explicit statement yet from the United States that it believes China's cyber espionage is focused on the U.S. government, as well as American corporations. China kept up a steady campaign of hacking in 2012 that included attempts to target U.S. government computer networks, which could provide Beijing a better insight into America's policy deliberations and military capabilities, according to the Pentagon's annual assessment of China's military. 'China is using its computer network exploitation capability to support intelligence collection against the U.S. diplomatic, economic, and defense industrial base sectors that support U.S. national defense programs,' said the report to Congress (PDF). The digital espionage was part of a broader industrial espionage effort that seeks to secure military-related U.S. and Western technology, allowing Beijing to scale back its reliance on foreign arms manufacturers, the report said. One day later, Beijing dismissed the Pentagon's report that accused it of widespread cyberspying on the U.S. government, rejecting it as an 'irresponsible' attempt to drum up fear of China as a military threat."

cold fjord writes "It looks like another milestone for hypersonic flight has been reached. From the story: 'The final flight of the X-51A Waverider test program has accomplished a breakthrough in the development of flight reaching Mach 5.1 over the Pacific Ocean . . ."It was a full mission success," said Charlie Brink, X-51A program manager for the Air Force Research Laboratory Aerospace Systems Directorate. The cruiser traveled over 230 nautical miles in just over six minutes over the Point Mugu Naval Air Warfare Center Sea Range. It was the longest of the four X-51A test flights and the longest air-breathing hypersonic flight ever. . . This was the last of four test vehicles originally conceived when the $300 million technology demonstration program began in 2004. The program objective was to prove the viability of air-breathing, high-speed scramjet propulsion. The X-51A is unique primarily due to its use of a hydrocarbon fuel in its supersonic combustion ramjet, or Scramjet, engine. ... The use of logistically supportable hydrocarbon fuel is widely considered vital for the practical application of hypersonic flight.'"

rjupstate writes "The Pentagon is quickly moving to approve the latest devices and platforms from BlackBerry, Samsung, and Apple. That's good news for two of those companies. It's not-so-good news for BlackBerry. 'The Pentagon currently has about 600,000 smartphone users – almost all using BlackBerrys – but ultimately aims to have as many as 8m smartphones and tablets, under the terms of a scheme made public last November.' 'In its effort to expand into the high security government niche, one that BlackBerry has enjoyed near singular control of for years, Samsung recently created a government advisory board made up of Samsung executives and security experts from various U.S. and foreign government security agencies. ... In the end, the program will likely elevate that status of both Apple and Samsung within military and civilian government agencies in the U.S. and other western countries.'"

An anonymous reader writes "Modern warfare these days is all about a 'networked environment.' But what happens when such things that make a modern military work breakdown? How would America's armed forces fight if their computers crashed, could not communicate, or were hit with massive viruses? What then? 'There's wisdom in science fiction. The conceit behind the reboot of the sci-fi epic Battlestar Galactica was that networking military forces exposes them to disaster unless commanders and weapons designers think ahead to the repercussions should an enemy exploit or break the network. The mechanical Cylons, arch foes of humanity, are able to crush the humans' battle fleet and bombard their home worlds with nukes by insinuating viruses into networked computers. They sever contact between capital ships and their fighter forces, and they shut down the fleet's and planets' defenses. Having lost the habit of fighting without networked systems, human crews make easy pickings for Cylon predators.'"

An anonymous reader writes "Here's an Interesting idea of how to use a Raspberry Pi and a few other inexpensive items to make a low cost detection system. From the article: 'The Drone Shield would combine a Raspberry Pi, a signal processor, a microphone, and analysis software to scan for specific audio signatures and compare them against what known drones sound like. (Because obviously a Predator drone is going to sound very different than a small quadcopter.) Once a match is found, the Drone Shield then sends an e-mail or SMS to its owner...'"

coolnumbr12 writes "Chinese hackers have infiltrated a sensitive U.S. Army database that contains information about the vulnerabilities of thousands of dams located throughout the United States. The U.S. Army Corps of Engineers' National Inventory of Dams (NID) has raised concerns that information gathered in the hack could help China carry out a cyber-attack on the national electrical power grid."

Nerval's Lobster writes "In March, the U.S. Department of Commerce's Bureau of Industry and Security added T-Platforms' businesses in Germany, Russia and Taiwan to the 'Entity List,' which includes those believed to be acting contrary to the national security or foreign policy interests of the United States. Commerce felt, according to the notice, that T-Platforms may be illegally assisting the Russian military and/or its nuclear program. In the meantime, Russian president Vladimir Putin has reportedly weighed in on the T-Platforms question. 'That's right. The use of political levers for unfair competition,' Putin said, according to RBTH.ru. 'Our European colleagues are independent people and they claim they want to work with us in certain spheres, yet they act as though they are absolutely dependent and unable to make their own decision. Is that so?' It's odd that Putin was quoted talking about 'European colleagues' when the Americans were responsible for cutting T-Platforms off."

Lucas123 writes Safe Gun Technology (SGTi) is hoping it can begin production on its version of a smart gun within the next two months. The Columbus, Ga.-based company uses relatively simple fingerprint recognition through a flat, infrared reader positioned on the weapon's grip. The biometrics reader enables three other physical mechanisms that control the trigger, the firing pin and the gun hammer. The controller chip can save from 15,000 to 20,000 fingerprints. If a large military unit wanted to program thousands of finger prints into a single weapon, it would be possible. A single gun owner could also temporarily program a friend or family member's print into the gun to go target shooting and then remove it upon returning home."

Bismillah writes about NATO's annual Locked Shields cyber defense exercises. "The Western European and North American mutual defence pact organisation NATO has concluded an annual cyber defence exercise, defending a fictitious network against incoming attacks. Called Locked Shields 2013, the exercise involved 250 people in eleven locations around Europe, under the auspices of the NATO Cooperative Cyber Defence Centre of Excellence (CCD-COE), the Finnish and Estonian Defence Forces and two government IT security organisations in the Baltic country."

An anonymous reader writes with some potentially troubling news about some security issues with the Navy's newest class of coastal warships."A Navy team of computer hacking experts found some deficiencies when assigned to try to penetrate the network of the USS Freedom, the lead vessel in the $37 billion Littoral Combat Ship program, said the official, who spoke on condition of anonymity. The Freedom arrived in Singapore last week for an eight-month stay, which its builder, Lockheed Martin Corp., hopes will stimulate Asian demand for the fast, agile and stealthy ships. 'We do these types of inspections across the fleet to find individual vulnerabilities, as well as fleet-wide trends,' said the official."

Nerval's Lobster writes "Network provider CenturyLink has won a $750 million contract from the Department of Defense to network the latter's sites together as part of the military equivalent of Internet2. The contract calls for CenturyLink to connect as many as 150 DoD locations nationwide with a dedicated high-speed fiber-optic network, with speeds ranging from 50 Mbits/s to up to 100 Gbits/sec. Given that the contract also calls for the telco to deploy Ethernet, IP and optical services, it's likely that the 50-Mbits/s threshold is a per-user basis, with site-to-site communications in the gigabit range. It's all part of the U.S. Department of Defense's High Performance Computing Modernization Program (DoD HPCMP), which aims to solve complicated and time-consuming problems with massively-parallel computing and very high-speed networking. The HPCMP program was formed in 1992, with the aim of connecting what had been separate facilities and test labs developed and maintained by the Army, Navy, and Air Force. That network is known as the Defense Research and Engineering Network (DREN) network, which currently uses an OC-48 optical network providing 2.4 Gbit/s between facilities, according to the military."

savuporo writes "A DC Area Drone User Group has posted an open letter in response to recent comments by Eric Schmidt about banning drones from private use. The closing section reads: 'Personally owned flying robots today have the power to change the balance of power between individuals and large bureaucracies in much the same way the Internet did in the past. And just as the military researchers who developed GPS for guiding munitions could never have imagined their technology would be used in the future to help people conduct health surveys in the world's poorest countries or help people find dates in the world's richest, there is a whole world of socially positive and banal applications for drones that are yet to be discovered. We should embrace this chance that technology provides instead of strangling these opportunities in their infancy. Our hope is that you and the rest of Google's leadership will embrace this pro-technology agenda in the future rather than seeking to stifle it. We would welcome the opportunity to speak further with you about this topic.'"

garymortimer writes "SHEPHERD-MIL, a UAV which looks like a native bird with the same flight performance, will be featured at HOMSEC 2013. This UAV is characterized by the glide-ratio and noiseless motor that make it invisible, silent and unobtrusive in sensitive missions. SHEPHERD-MIL is equipped with cameras and geolocation software. The system is especially suitable for border surveillance missions, firefighting, and anti-drug trafficking operations amongst others."

An anonymous reader writes "Google Chairman Eric Schmidt is urging lawmakers to regulate the use of unmanned aircraft by civilians — and quickly. He posed this hypothetical situation to The Guardian: 'You're having a dispute with your neighbor. How would you feel if your neighbor went over and bought a commercial observation drone that they can launch from their backyard. It just flies over your house all day. How would you feel about it?' Schmidt went on to bring up military and terrorist concerns. 'I'm not going to pass judgment on whether armies should exist, but I would prefer to not spread and democratize the ability to fight war to every single human being. It's got to be regulated... It's one thing for governments, who have some legitimacy in what they're doing, but have other people doing it... it's not going to happen.'"