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SUMMARY:Protecting the planet for our children and other species - Peter D
 avidson
DTSTART:20140210T200000Z
DTEND:20140210T211500Z
UID:TALK50578@talks.cam.ac.uk
CONTACT:Adam
DESCRIPTION:The science\, governance and ethics of engineering planetary s
 un–shades.\n\nPeter Davidson FREng\nFormer Senior Innovation Advisor to 
 the\nUK Government Chief Economic Advisor and Director General of the Rese
 arch Councils\n\nThe extent and the rate of climate change are uncertain. 
 Predicting gradual change is always difficult\; and determining the tippin
 g points where substantial change might happen is problematic.\n\nResearch
  has just begun on technologies to provide a means of cooling the planet t
 o reduce impacts of climate change.  If major climate change happens\, it 
 will be the world’s poorest people and least robust ecosystems that will
  be most affected\, both because of where they are situated and their lack
  of resilience.\n \nTwo technologies with the potential to provide a rapid
 \, low-cost response to unforeseen changes are:\n\n(i) seeding the stratos
 phere with sub–micron light scattering particles\n\n(ii) the nucleation 
 of additional cloud cover over the oceans\n\nEncouraging features of both 
 technologies are that they have natural analogues\; they can be switched o
 n or off quickly\; and they are both relatively inexpensive.\n\nResearch o
 n these technologies will be described\, with discussion of the main issue
 s and risks associated with their development\, testing and implementation
 .\n\nEveryone is welcome. Free for members\, £2 on the door for non-membe
 rs. Followed by refreshments (that means smoothies\, cheese and grapes!).
LOCATION:Plant Sciences Lecture Theatre\, Downing Site
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