Sense Question:

“How can extensive networks of proxy climate data be set up?”

Relevance of this question:

IPCC Working Group 1, technical summary, http://www.ipcc.ch/, Lastly, this assessment would be improved with extensive networks of proxy data that run right up to the present day. This would help measure how the proxies responded to the rapid global warming observed in the last 20 years, and it would also improve the ability to investigate the extent to which other, non-temperature, environmental changes may have biased the climate response of proxies in recent decades.