For a variety of political and natural reasons, global warming affects some countries differently than others. Fragile economies and weak infrastructures tend to worsen the results of climate disruptions, a problem exemplified by Bangladesh’s vulnerability to monsoons, accelerating desertification in northern China, and, most visibly, Hurricane Katrina’s devastation in New Orleans. At the same time, warming and altered rainfall patterns may—temporarily—improve conditions for countries in extreme latitudes, increasing harvests in Canada and Russia for a few years. Similarly, intentional changes meant to fight global warming would also have differential results.
At the same time, the resources required for geoengineering projects can vary dramatically. A start-up company called Climos and the government of India have each begun to prepare tests of “ocean iron fertilization” to boost oceanic phytoplankton blooms, in order to extract carbon dioxide from the atmosphere, at a cost of just a few million dollars. At the other end of the spectrum, projects like the injection of megatons of sulfur dioxide into the upper atmosphere to simulate the effects of a volcano would easily cost in the tens of billions of dollars—still within the means of most developed countries.
Read about the new game Frontline: Fuel of War on CNN:
Over the last two decades prior to 2030 oil production has peaked and is declining rapidly, renewables never panned out, plagues hit, and starvation ensued. In other words, things have been very bad, at least according to Kaos Studios, the maker of this video game you’re playing.
Israel has been hit in recent years by thousands and thousands of rockets, mortar shells, and missiles. And that could be just a preview of the onslaught Iran may one day unleash. So Israeli military leaders have begun early planning for a new, robotic defense system, armed with enough artificial intelligence that it “could take over completely” from flesh-and-blood operators. ”It will be designed for… autonomous operations,’ Brig. Gen. Daniel Milo, commander of Israel’s air defense forces, tells Defense News‘ Barbara Opall-Rome. And in the event of a “doomsday” strike, Opall-Rome notes, the system could handle “attacks that exceed physiological limits of human command.”
This week, Richard Branson unveiled his vision for the future of commercial spaceflight (see also our blog post in the Great Beyond). Based on a design by Ansari X-Prize winner Burt Rutan, his new SpaceShip Two will carry six paying passengers and two crew on a suborbital flight.
The research team, led by Nobel laureate Hamilton Smith, ordered short strands of genetic code from commercial DNA synthesis companies in the U.S. and Germany and stitched them into longer and longer strands using standard molecular biology techniques. To assemble the largest pieces of DNA, they inserted them into yeast cells and exploited a natural process called “homologous recombination,” which is used by yeast to repair damaged DNA. The experiment’s final product is equivalent to the naturally occurring genetic code of M. genitalium, with two minor exceptions: The scientists disabled the gene that gave the bug power to infect human cells, and they added a few “watermarks,” short strips of signature genetic code that identify the product as man-made.
The west must be ready to resort to a pre-emptive nuclear attack to try to halt the “imminent” spread of nuclear and other weapons of mass destruction, according to a radical manifesto for a new Nato by five of the west’s most senior military officers and strategists.
A California company has brought human cloning research to a new level with efficient production of cloned human blastocysts — an early stage of embryos.
The company, Stemagen in La Jolla in California, hopes that its achievement will be the first step towards using cloning techniques for biomedical research and, potentially, therapy. But first they will need to go the next step — using such blastocysts to establish self-propagating lines of embryonic stem cells that, as clones, would be genetically identical to a patient.
A year ago to the day, China knocked a weather satellite out of orbit, and threw the international community into panic. Some figured the satellite-killer test was the harbinger of a future war in space — the kind of conflict that could cripple a tech-dependent United States military. Geoffrey Forden, PhD — an MIT research associate and a former UN weapons inspector and strategic weapons analyst at the Congressional Budget Office — examines the possibilities of an all-out Chinese assault on American satellites. This is part one. Click for parts two and three.
Although the underlying concepts of nanotechnology were thought up in 1959, only during the 1990s were the first tentative steps taken toward identifying and developing nanomaterials. “Between the end of the first decade of the 21st century and 2025, a number of gamechangers will need to occur if nanotech is to advance significantly,” von Stackelberg says. These gamechangers include:
A shift from “passive” to “active” nanotech. In the coming decades, nanotech will likely make the transition from simple nanomachines—particles, crystals, rods, tubes, and sheets of atoms—to more complex ones that contain valves, switches, pumps, and motors.
Nanoscale tools. To work at the nanoscale, new tools will be needed to allow researchers and technicians to see, measure, and manipulate individual atoms and molecules. “One promising approach uses dynamic light scattering, a technique that measures how much nanoparticles jiggle when hit with laser light,” von Stackelberg shares. “Many scientists agree that this method has the potential to do rapid, accurate measurement, and is expected to be operational by 2010.”
Nanofabrication. Currently, manufacturing processes for nanomaterials are extremely expensive, produce only small amounts of material, and generate a significant amount of impurities and waste, von Stackelberg says. “But consider this: Assembly of nanodevices today is at the same stage as the automobile industry was before Henry Ford developed the assembly line.”
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