San Diego Tribune: In an effort to pin down the costs of global climate change, one of the world’s largest insurers announced yesterday that its research network is joining with San Diego’s Scripps Institution of Oceanography to study the effect of changes in the weather and sea level. Under the arrangement, Scripps will provide climate research to the Willis Group of London and its clients in the insurance industry, which could use the data to assess their exposure to financial risks from rising sea …