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| Greta Thunberg: 'Leaders failed us on climate change' | Greta Thunberg: 'Leaders failed us on climate change' |
| (32 minutes later) | |
| Swedish teenage campaigner Greta Thunberg has told a gathering of world leaders they have failed to act on climate change. | Swedish teenage campaigner Greta Thunberg has told a gathering of world leaders they have failed to act on climate change. |
| "You have stolen my dreams and my childhood with your empty words," she told a UN climate summit in New York. | "You have stolen my dreams and my childhood with your empty words," she told a UN climate summit in New York. |
| About 60 world leaders are taking part in the one-day meeting organised by UN Secretary General António Guterres. | About 60 world leaders are taking part in the one-day meeting organised by UN Secretary General António Guterres. |
| He earlier said countries could only speak at the summit if they came with action plans to cut carbon emissions. | He earlier said countries could only speak at the summit if they came with action plans to cut carbon emissions. |
| US President Donald Trump, a climate change sceptic, had not been expected at the meeting - but he was seen in the audience. | |
| Brazil and Saudi Arabia are among the countries staying away. | Brazil and Saudi Arabia are among the countries staying away. |
| What did Greta Thunberg say? | |
| In an emotional speech, she said: "This is all wrong. I shouldn't be up here. I should be back in school on the other side of the ocean, yet you all come to us young people for hope. How dare you? | |
| "You have stolen my dreams and my childhood with your empty words," the 16-year-old said. | |
| And she urged world leaders to act urgently, saying: "We will be watching you." | |
| Scientists' warning | |
| The summit comes days after several million people took part in a global climate strike led by youth activists. | The summit comes days after several million people took part in a global climate strike led by youth activists. |
| Ahead of the meeting, scientists warned the signs and impacts of global warming were speeding up. | |
| The World Meteorological Organization (WMO) said the amount of carbon dioxide going into the atmosphere between 2015 and 2019 had grown by 20% compared with the previous five years. | The World Meteorological Organization (WMO) said the amount of carbon dioxide going into the atmosphere between 2015 and 2019 had grown by 20% compared with the previous five years. |
| "We should listen to the loud cry coming from the schoolchildren," said Professor Brian Hoskins, chair of the Grantham Institute, Imperial College London, and professor of meteorology at the University of Reading. | "We should listen to the loud cry coming from the schoolchildren," said Professor Brian Hoskins, chair of the Grantham Institute, Imperial College London, and professor of meteorology at the University of Reading. |
| "There is an emergency - one for action in both rapidly reducing our greenhouse gas emissions towards zero and adapting to the inevitable changes in climate," he said. | "There is an emergency - one for action in both rapidly reducing our greenhouse gas emissions towards zero and adapting to the inevitable changes in climate," he said. |
| Scientists plead with politicians | |
| By Roger Harrabin, BBC environment analyst | |
| As the dangers of climate heating become ever more apparent, so does the absence of collective will to tackle the issue. | |
| In 2015 in Paris, all the world's leaders sounded their determination to curb the emissions that were heating the climate. | |
| Today will see a host of initiatives from businesses and small- and medium-sized nations. | |
| But President Trump is encouraging fossil fuel in every way he can. | |
| And China - in spite of its trend-setting commitment to solar and wind power - is still building new coal-fired power stations. | |
| Even the UK, a global leader in climate policy-making, is veering away from its own medium-term targets to cut emissions. | |
| The government is still aiming to expand Heathrow airport and increase the road network in a way that will increase emissions in those sectors. | |
| Politicians appear to believe climate change can be challenged with a version of economic business as usual. | |
| Their scientists are telling them with increasingly desperation that we humans are facing an unprecedented threat in need of an unprecedented response. | |
| Follow Roger on Twitter @rharrabin |