Barclays acquired the Lehman index business in November 2008 and rebranded it to their own name. So the Lehman Global Aggregate index is now the Barclays Global Aggregate index. While it is certainly possible that they will adjust their methodology in the future, is is the same index, and the returns prior to the transition are unaffected.

food security is threatened by climate change most probably due to global warming this effects the environment and atmosphere

Delhi declaration

If you visit this website, not only can you search the Social Security Index, but you can also read some important information pertaining to the Social Security Index at the bottom where it says "About Social Security Index": http://www.genealogybank.com/gbnk/ssdi/

The social security index is a database of deceased persons in the United States identified by social security. The index is available for public access to find specific records.