The United Nations has called for an “independent, effective and transparent investigation” into the discovery of mass graves at two Gaza hospitals that were besieged and raided by Israeli troops this year, a UN statement said on Tuesday.

An ABC News investigation tracked plastic bags from Walmart US recycling bins to controversial plastic facilities in Southeast Asia.

Documentary Bad Faith looks at the history of a group trying to affect and corrupt politics under the guise of religion

An international team of scientists has created the tree of life for almost 8,000 (about 60%) genera of flowering plants (angiosperms).