The Sahara desert which skirts the Sahel to the south has expanded by 10% over the past 100 years according to a national science foundation study.

根据国家科学基金会的一项研究，撒哈拉沙漠位于萨赫勒以南，在过去的100年里扩张了10%。

And so what happened is in 2012, this Congressman, Jim Cooper, he brought together all of these people from science foundations, organizations, universities, publications.

2012 年发生的事情是，这位国会议员吉姆·库珀（Jim Cooper）召集了来自科学基金会、组织、大学和出版物的所有这些人。