DALLAS (July 6, 2012)--Former President George W. Bush and his wife, Laura, were headed home Friday after a weeklong trip to Africa that included stops in Zambia and Botswana.

They left for Dallas on Friday, which is Bush's 66th birthday.

They were in Africa to promote Pink Ribbon Red Ribbon, a partnership between the George W. Bush Institute, the U.S. President's Emergency Plan for AIDS Relief, UNAIDS and Susan G. Komen for the Cure that supports efforts to fight cervical and breast cancer in sub-Saharan Africa.

Earlier in the week, they helped to renovate a women's cancer screening center in Zambia.

The George W. Bush Presidential Center said the Bushes also met Peace Corps members in Botswana, and visiting a home for ill, orphaned and vulnerable children where toddlers sang "Happy Birthday" to the former president.