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ESA ACT

How to Get Rid Of All That Orbiting Space Junk? - 0 views

online.wsj.com/...SB123672891900989069.html

environment MAD

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Some ideas on debris mitigation.
LeopoldS

Mitigation and Adaptation Strategies for Global Change, Online First™ - Sprin... - 0 views

www.springerlink.com/...022322t527122332

geoengineering

shared by LeopoldS on 26 Aug 12 - No Cached
  • LeopoldS on 26 Aug 12
     
    fail safe is is probably a bit exaggerated ...
LeopoldS

Simultaneously Mitigating Near-Term Climate Change and Improving Human Health and Food ... - 0 views

www.sciencemag.org/...183.abstract

climate-change Science nrg energy

shared by LeopoldS on 12 Jan 12 - No Cached
  • LeopoldS on 12 Jan 12
     
    Interesting article, very practical in the approach ...
Luís F. Simões

Singularity University, class of 2010: projects that aim to impact a billion people wit... - 8 views

www.kurzweilai.net/ty-webinar-today-sneak-preview

AI robotics biomedicine biotechnology electronics energy nanotechnology singularity futures social ethics space synthetic biology computer science defence

shared by Luís F. Simões on 22 Sep 10 - No Cached
  • Luís F. Simões on 22 Sep 10
     
    At the link below you find additional information about the projects: Education: Ten weeks to save the world http://www.nature.com/news/2010/100915/full/467266a.html
  • ...8 more comments...
  • LeopoldS on 23 Sep 10
     
    this is the podcast I was listening to ...
  • Dario Izzo on 23 Sep 10
     
    We can do it in nine :)
  • LeopoldS on 24 Sep 10
     
    why wait then?
  • Juxi Leitner on 24 Sep 10
     
    hmm, wonder how easy it is to get funding for that, 25k is a bit steep for 10weeks :)
  • Dario Izzo on 26 Sep 10
     
    well, we wait for the same fundings they get and then we will do it in nine.... as we say in Rome "a mettece un cartello so bboni tutti". (italian check for Juxi)
  • LeopoldS on 26 Sep 10
     
    and what you think about the project subjects?
  • LeopoldS on 26 Sep 10
     
    I like the fact that there are quite a lot of space projects .... and these are not even bad in my view: The space project teams have developed imaginative new solutions for space and spinoffs for Earth. The AISynBio project team is working with leading NASA scientists to design bioengineered organisms that can use available resources to mitigate harsh living environments (such as lack of air, water, food, energy, atmosphere, and gravity) - on an asteroid, for example, and also on Earth . The SpaceBio Labs team plans to develop methods for doing low-cost biological research in space, such as 3D tissue engineering and protein crystallization. The Made in Space team plans to bring 3D printing to space to make space exploration cheaper, more reliable, and fail-safe ("send the bits, not the atoms"). For example, they hope to replace some of the $1 billion worth of spare parts and tools that are on the International Space Station.
  • Dario Izzo on 26 Sep 10
     
    and all in only a three months summer graduate program!! that is impressive. God I feel so stupid!!!
  • LeopoldS on 26 Sep 10
     
    well, most good ideas probably take only a second to be formulated, it's the details that take years :-)
  • Dario Izzo on 26 Sep 10
     
    I do not think the point of the SU is to formulate new ideas (infact there is nothing new in the projects chosen). Their mission is to build and maintain a network of contacts among who they believe will be the 'future leaders' of space ... very similar to our beloved ISU.
Ma Ru

Venus holds warning for Earth - 0 views

www.esa.int/...SEM8Z7OWXGG_index_0.html

space climate sulphur science ESA Venus

shared by Ma Ru on 09 Dec 10 - No Cached
  • Ma Ru on 09 Dec 10
     
    Just in case you missed these one... should be of interest for ACT's climate modelling squad. "As well as telling us more about Venus, it could be sending a warning to those on Earth seeking to inject our atmosphere with sulphur droplets in an attempt to mitigate climate change."
pacome delva

Cutting Soot Counteracts Warming in California - 1 views

news.sciencemag.org/...-soot-counteracts-warming.html

phy climate_change soot

shared by pacome delva on 15 Dec 10 - No Cached
  • models suggest that cut may also have cut into the warming of the state's climate in an unexpectedly big way, preventing temperatures from climbing even higher.
  • "This indeed has major implications for mitigating climate change on a global scale," says Ramanathan. "We have the chance to see a quick global response."
Nicholas Lan

Betting on Green - 5 views

www.economist.com/18304172

technology economics innovation

shared by Nicholas Lan on 16 Mar 11 - No Cached
  • Nicholas Lan on 16 Mar 11
     
    breakthroughs vs. accelerated deployment in climate change mitigation technologies.
  • ...2 more comments...
  • LeopoldS on 17 Mar 11
     
    interesting guy indeed ... "Forget today's green technologies like electric cars, wind turbines, solar cells and smart grids, in other words. None meets what Mr Khosla calls the "Chindia price"-the price at which people in China and India will buy them without a subsidy. "Everything's a toy until it reaches that point," he says. I also like this one since its a bit like ACT topic selection: ""I am only interested in technologies that have a 90% chance of failure but, if they do succeed, would change the infrastructure of society in some radical way," he says." should we propose SPS to him ? :-)
  • LeopoldS on 17 Mar 11
     
    one more: ""I never compute returns. If you start forecasting cash flows, you lose innovation, you lose instinct. You average yourself down to mediocrity." "I've had many more failures than successes in my life," admits Mr Khosla. "My willingness to fail gives me the ability to succeed."
  • Nicholas Lan on 17 Mar 11
     
    indeed. puts me in mind of the often reinvented private ACT idea. actually there's a bunch of interesting looking articles on his website. http://www.khoslaventures.com/khosla/papers.html . No sps in the solar one as far as i can tell :) found this bit intriguing too in that, albeit presumably out of context, it doesn't make sense ""The solution to our energy problems is almost the exact opposite of what Khosla says," declares Joseph Romm, who is the editor of Climate Progress, an influential climate blog, and a senior fellow at the Centre for American Progress Action Fund, a think-tank. "Technology breakthroughs are unlikely to be the answer. Accelerated deployment of existing technologies will get you down the cost curve much more rapidly than a breakthrough."" found this seemingly not very well considered piece (to be fair a blog post) by the guy http://climateprogress.org/2010/07/02/is-anyone-more-incoherent-than-vinod-khosla/ . maybe he's written some more convincing stuff in this vein somewhere.
  • Ma Ru on 25 Apr 11
     
    "Mr Khosla (...) is investing over $1 billion of his clients' money in black swans" Well, with his own money his approach might be a little different :-)
Luís F. Simões

Europe's Plan to Move An Asteroid - Technology Review - 3 views

www.technologyreview.com/...27028

asteroid deflection

shared by Luís F. Simões on 02 Aug 11 - No Cached
LeopoldS liked it
  • In 2002, the European Space Agency began a program called Don Quijote to find out how best to perform such a deflection.
  • Now, Stephen Wolters at the Open University in the UK and a few friends have published a new analysis of the mission saying that measuring the change in orbit is not enough. Instead, the spacecraft needs to characterise the impact in detail, determining the density of the material near the asteroid's surface, the size of the surface grains as well as the mass and speed distribution of the impact ejecta.
  • Ref: arxiv.org/abs/1107.4229: Measurement Requirements For A Near-Earth Asteroid Impact Mitigation Demonstration Mission
LeopoldS

The Space Movement: Asteriod Explosion over Indonisia - 2 views

spacemovement.blogspot.com/...-explosion-over-indonisia.html

NEO mitigation asteroids

shared by LeopoldS on 28 Oct 09 - Cached
  • LeopoldS on 28 Oct 09
     
    Andrés and Ian - you might like this particularly ....
nikolas smyrlakis

BBC NEWS | Asia-Pacific | Scientists bring snow to Beijing - 2 views

news.bbc.co.uk/...8337337.stm

china asia Weather Modification Office climate change

shared by nikolas smyrlakis on 02 Nov 09 - Cached
  • nikolas smyrlakis on 02 Nov 09
     
    Did you know about this Weather Modification Office? Promising or dodgy?
  • Friederike Sontag on 03 Nov 09
     
    Yes. In China it happens apparently quite often that weather is regionally modified, e.g. in order to have good weather conditions during certain events (like olympics in Beijing). But also in other countries weather modification is applied, for reasons of agriculture, pollution, skiing, etc. Obviously, one wonders on the environmental impact of such an artificial cloud feeding process with silver iodide. I just googled, stumbling upon this report http://www.weathermodification.org/AGI_toxicity.pdf which published the result: no environmentally harmful effects...
  • Friederike Sontag on 03 Nov 09
     
    and w.r.t. ur question: I mean different weather conditions which we experience locally (like droughts or other extreme weather events) are (often) due to large-scale/global climatic changes. Hence, cloud seeding just describes a local, short-term mitigation of these events. However, there is a geoengineering proposal (so climate modification) which also suggests to seed clouds above the sea (i.e. increase cloud coverage, e.g. by using seaspray as cloud condesation nuclei), thereby increasing the planetary albedo (Earth reflectance) and reducing the energy reaching the Earth surface. If this idea is promising or not, I couldn't judge upon, but for sure it is worthwhile to take a closer look at.
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