Einstein’s general theory of relativity can be summed up in just 12 words: “Space-time tells matter how to move; matter tells space-time how to curve”. But this short description from the ...

New York - Statement attributable to the Spokesperson for the Secretary-General on the Central African Republic [scroll down for French] Tokyo, Japan - Secretary-General's video message to the ...

“The seventeen Sustainable Development Goals are our shared vision of humanity and a social contract between the world's leaders and the people,” said UN Secretary-General Ban Ki-moon.