Singer/actress Mandy Moore and Alexandra Cousteau, environmentalist and granddaughter of explorer Jacques-Yves Cousteau, takes photographs with schoolchildren to highlight the plight of people worldwide who do not have access to clean water and sanitation on Capitol Hill in Washington March 23, 2010. The international observance of World Water Day is an initiative that grew out of the 1992 United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro.
