Torino 2, and Counting
 Whether or not we acknowledge it,  the possibility of an asteroid impact on the Earth continues to loom over us, along with the possibility that humankind may well go the way of the dinosaurs. Asteroid impacts may be rare, but they can have utterly devastating results; moreover, thinking about how to estimate and respond to asteroid impacts good practice for all kinds of thinking about big-picture, slow-changing planetary challenges.  We now have another chance to practice.
Whether or not we acknowledge it,  the possibility of an asteroid impact on the Earth continues to loom over us, along with the possibility that humankind may well go the way of the dinosaurs. Asteroid impacts may be rare, but they can have utterly devastating results; moreover, thinking about how to estimate and respond to asteroid impacts good practice for all kinds of thinking about big-picture, slow-changing planetary challenges.  We now have another chance to practice.
According to New Scientist, asteroid 2004 VD17 has been given a Torino scale rating of 2 -- higher than any other object in the sky, at present -- indicating a small but measurable risk of impact. As of measurements on February 26, the asteroid has a 1 in 1600 chance of hitting the Earth in 2102 -- an increase over the initial estimate. So far, almost every time astronomers have discovered an asteroid on a potential impact course, subsequent refinements of the data confirm that the rock will miss us. It's extraordinarily rare for further refinement to increase the measured risk; the last time this happened was with asteroid 2004 MN4, which is now estimated to miss the Earth by a whisker in 2029.
It's likely that further observations will put the risk of impact at 0 -- but it's not guaranteed. Eventually, we will find that an asteroid is on a direct impact orbit, and we'll have to start thinking about how to deal with it. That's why this bit from the New Scientist article so frustrating:

 These days, most spam-filtering programs rely on something called "
These days, most spam-filtering programs rely on something called " In a world of Moore's Law, fuel cell cars and iPods, the humble battery stands out as a poor performer. Modern lithium-ion batteries are certainly lighter, less toxic, and somewhat more capacious than the nickel-cadmium or lead-acid batteries of days gone by, but these are incremental improvements -- and they still rely on the kinds of electro-chemical processes used by the
In a world of Moore's Law, fuel cell cars and iPods, the humble battery stands out as a poor performer. Modern lithium-ion batteries are certainly lighter, less toxic, and somewhat more capacious than the nickel-cadmium or lead-acid batteries of days gone by, but these are incremental improvements -- and they still rely on the kinds of electro-chemical processes used by the  Sensor devices able to keep tabs on what's happening to the world around you will play an important role in the Bright Green Future. The rapidly-changing global (and local!) environment require us to pay closer attention to current and emerging conditions. More information doesn't always lead to better decision-making, but it's better to choose to discard information you have than to lament the information you don't. At the same time, collaborative, DIY technologies will also play an important role in the world we'd like to see. More participants doesn't just mean more of a chance to spot problems -- although that's true -- a greater number of participants offers a greater opportunity for diverse innovation.
Sensor devices able to keep tabs on what's happening to the world around you will play an important role in the Bright Green Future. The rapidly-changing global (and local!) environment require us to pay closer attention to current and emerging conditions. More information doesn't always lead to better decision-making, but it's better to choose to discard information you have than to lament the information you don't. At the same time, collaborative, DIY technologies will also play an important role in the world we'd like to see. More participants doesn't just mean more of a chance to spot problems -- although that's true -- a greater number of participants offers a greater opportunity for diverse innovation.  New Update: Upon further examination of the activities of the parent organization, and some internal discussion of the history of Worldstock, the suggestion that Worldstock is even "potentially worldchanging" is hereby revoked.
New Update: Upon further examination of the activities of the parent organization, and some internal discussion of the history of Worldstock, the suggestion that Worldstock is even "potentially worldchanging" is hereby revoked.
 We've been talking about the video game A Force More Powerful for
We've been talking about the video game A Force More Powerful for  We have a particular affection for maps here at WorldChanging, as they provide a view of the world that is thoroughly useful, yet is otherwise unattainable without launching into orbit. Digital maps that allow for the integration of dynamic sets of information are particularly appealing, as are those that encourage the combination of data resources. We're not alone in this appreciation of spatial displays of information, and the variety of maps out there -- either novel designs or "mash-ups" using Google Earth -- keeps growing at a pleasingly rapid pace. Here are some of those that have caught our eye over the last couple of weeks, but I want to start with some thoughts as to where the trend may go.
We have a particular affection for maps here at WorldChanging, as they provide a view of the world that is thoroughly useful, yet is otherwise unattainable without launching into orbit. Digital maps that allow for the integration of dynamic sets of information are particularly appealing, as are those that encourage the combination of data resources. We're not alone in this appreciation of spatial displays of information, and the variety of maps out there -- either novel designs or "mash-ups" using Google Earth -- keeps growing at a pleasingly rapid pace. Here are some of those that have caught our eye over the last couple of weeks, but I want to start with some thoughts as to where the trend may go. In the immediate aftermath of the December 26, 2004, tsunami, we pointed to satellite photos showing the
In the immediate aftermath of the December 26, 2004, tsunami, we pointed to satellite photos showing the  Combine two WorldChanging obsessions -- online map systems and the planet Mars -- and you have the potential for something that could keep us happily clicking and playing for hours. Google has now unleashed
Combine two WorldChanging obsessions -- online map systems and the planet Mars -- and you have the potential for something that could keep us happily clicking and playing for hours. Google has now unleashed  The Earth's environment, particularly its climate, is not a linear, obvious-cause and immediate-effect system. This has a number of implications, but the one that troubles many of us who pay close attention is the resulting potential for "phase change" shifts in the climate system, where seemingly-small perturbations lead to a major change in how the climate behaves (the classic example of this kind of change is a pile of sand with grains dropping down on the peak; some will slide down, some will stack up, but eventually the entire peak will collapse, radically changing the shape of the pile). As we develop the tools and techniques to better understand the overall global climate and ecological system, these "tipping points" should be at the top of our list of processes to identify and, if at all possible, defend.
The Earth's environment, particularly its climate, is not a linear, obvious-cause and immediate-effect system. This has a number of implications, but the one that troubles many of us who pay close attention is the resulting potential for "phase change" shifts in the climate system, where seemingly-small perturbations lead to a major change in how the climate behaves (the classic example of this kind of change is a pile of sand with grains dropping down on the peak; some will slide down, some will stack up, but eventually the entire peak will collapse, radically changing the shape of the pile). As we develop the tools and techniques to better understand the overall global climate and ecological system, these "tipping points" should be at the top of our list of processes to identify and, if at all possible, defend. Opponents of animal testing for medical research often argue that the same tests could be performed via computer simulation; researchers counter that simulations simplify physiology too much to be useful in that way. But such a claim may be in its final era -- we now have the first functional, down-to-the-atom simulation of a biological organism. Computational biologists at the University of Illinois at Urbana-Champaign and crystallographers at the University of California at Irvine have created a
Opponents of animal testing for medical research often argue that the same tests could be performed via computer simulation; researchers counter that simulations simplify physiology too much to be useful in that way. But such a claim may be in its final era -- we now have the first functional, down-to-the-atom simulation of a biological organism. Computational biologists at the University of Illinois at Urbana-Champaign and crystallographers at the University of California at Irvine have created a  This is brilliant.
This is brilliant. The technoblogosphere is abuzz with the news that a group of computer scientists at the
The technoblogosphere is abuzz with the news that a group of computer scientists at the  Communication is at the heart of a lot of what we talk about here on WorldChanging, and the last couple of weeks have seen some particularly interesting developments in the world of how we get connected to each other.
Communication is at the heart of a lot of what we talk about here on WorldChanging, and the last couple of weeks have seen some particularly interesting developments in the world of how we get connected to each other. Most people who know about "open source" (including Free/Libre software) understand it as a technological model. A smaller group says no, really it's an economic model (Yochai Benkler's 2002
Most people who know about "open source" (including Free/Libre software) understand it as a technological model. A smaller group says no, really it's an economic model (Yochai Benkler's 2002  For some people, global warming is a hard sell. Temperatures going up by a few degrees doesn't sound all that bad, and even results like drought or increased spread of mosquitos and other pests, while certainly unpleasant, are familiar issues. Mega-problems like whiplash/abrupt climate change, where warming leads to an ice age, can sound more surreal than threatening. But
For some people, global warming is a hard sell. Temperatures going up by a few degrees doesn't sound all that bad, and even results like drought or increased spread of mosquitos and other pests, while certainly unpleasant, are familiar issues. Mega-problems like whiplash/abrupt climate change, where warming leads to an ice age, can sound more surreal than threatening. But  The idea of using a big cash prize as a catalyst for invention has become pretty popular, from the
The idea of using a big cash prize as a catalyst for invention has become pretty popular, from the  WorldChanging friends
WorldChanging friends  If Wired or Technology Review were to do a cover story on "computing in 2020," you know what you'd get: computer-generated mock-ups of what the laptop/wearable/ambient Computer of Tomorrow will look like, interviews with people working on bleeding-edge technologies, and lots of discussion of how future computers will work. When Nature does a cover story on "
If Wired or Technology Review were to do a cover story on "computing in 2020," you know what you'd get: computer-generated mock-ups of what the laptop/wearable/ambient Computer of Tomorrow will look like, interviews with people working on bleeding-edge technologies, and lots of discussion of how future computers will work. When Nature does a cover story on " Even in the best case climate scenarios, the planet is going to face years of rising temperatures and some pretty unpleasant (and often tragic) results across much of the world. Given that many of the worst-hit locations will be in the poorer nations, it's important that we spend some time thinking about ways not just to mitigate the process of climate disruption -- that is, to reverse it -- but also to mitigate its effects. This isn't "adaptation," it's harm reduction; think of it as suppressing the worst symptoms while fighting to cure the disease.
Even in the best case climate scenarios, the planet is going to face years of rising temperatures and some pretty unpleasant (and often tragic) results across much of the world. Given that many of the worst-hit locations will be in the poorer nations, it's important that we spend some time thinking about ways not just to mitigate the process of climate disruption -- that is, to reverse it -- but also to mitigate its effects. This isn't "adaptation," it's harm reduction; think of it as suppressing the worst symptoms while fighting to cure the disease. Documentary filmmakers are in a particularly difficult position in terms of intellectual property, as most documentarians focus on lives of real people -- and modern life, especially in the US, Europe and Japan, is inundated with logos, music, background video and myriad other trademark and copyright concerns.
Documentary filmmakers are in a particularly difficult position in terms of intellectual property, as most documentarians focus on lives of real people -- and modern life, especially in the US, Europe and Japan, is inundated with logos, music, background video and myriad other trademark and copyright concerns.  Attention, European university students (or their friends and families): how would you like to design an unmanned aerial vehicle for use on Mars?
Attention, European university students (or their friends and families): how would you like to design an unmanned aerial vehicle for use on Mars?