evidence: PETTERI TAALAS, Secretary-General of the World Meteorological Organization (WMO), noted the recent Cyclone Idai in Mozambique, Malawai and Zimbabwe, oceans warming by half a degree, and the most expensive hurricane season in Caribbean history, all of which demonstrate a worsening situation demanding action. He highlighted that the past four years have been the warmest in history and greenhouse gases have increased by 2.7 per cent. Meanwhile, only 15 per cent of global energy is sourced from nuclear, hydro and renewable power. Without concrete action, the planet will continue to get warmer. Turning to population growth, he said Africa may have 4 billion inhabitants by the end of the century. Echoing other speakers, he called for more involvement by young people.