Inter Press Service: Over 150 countries are expected to sign the Paris climate change agreement on April 22 but the historic treaty will not come into force until it has been ratified by 55 countries.
UN Secretary-General Ban Ki-moon, who has hailed the agreement as "a landmark of international cooperation on one of the world's most complex issues", is hoping for fast-paced ratifications - perhaps before the end of the year so that it will also be considered as one of his lasting political legacies before he steps...