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WATCH: Greta Thunberg's full speech to world leaders at UN Climate Action Summit

PBS NewsHour・3 minutes read

Greta Thunberg underscores the critical need for urgent climate action, highlighting that the world can only emit 350 gigatons of CO2 before exhausting its budget in less than 8.5 years and condemns leaders for their insufficient responses to this crisis. She emphasizes that youth are demanding accountability and will not forgive leaders who prioritize economic growth over the sustainability of their futures.

Insights

  • Greta Thunberg highlights the critical nature of climate action, noting that the world can only afford to emit 350 gigatons of CO2, a significant reduction from 420 gigatons in 2018, with current emission rates threatening to deplete this budget in under 8.5 years. She argues that relying on a mere 50% chance to limit global temperature rise to 1.5 degrees Celsius is inadequate and poses severe risks of irreversible damage to the planet and future generations.
  • Thunberg expresses profound disappointment in world leaders for prioritizing economic growth over environmental protection, claiming their unfulfilled promises have adversely affected the hopes and futures of young people. She insists on the need for accountability, warning that the youth will not overlook inaction and emphasizing that the movement for climate change is gaining strength, urging leaders to acknowledge the seriousness of the crisis and to act with urgency.

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Recent questions

  • What is climate change?

    Climate change refers to significant alterations in global temperatures and weather patterns over time. While climate change is a natural phenomenon, scientific evidence shows that human activities, particularly the burning of fossil fuels and deforestation, have accelerated these changes. This results in rising sea levels, more extreme weather events, and shifts in wildlife populations and habitats. The consequences of climate change pose serious risks to ecosystems, human health, and economies worldwide, making it a critical issue that requires urgent attention and action.

  • How can I reduce my carbon footprint?

    Reducing your carbon footprint involves making conscious choices to minimize greenhouse gas emissions in your daily life. You can start by using public transportation, biking, or walking instead of driving, which helps decrease reliance on fossil fuels. Additionally, conserving energy at home by using energy-efficient appliances, turning off lights when not in use, and opting for renewable energy sources can significantly lower emissions. Eating a plant-based diet, reducing waste, and supporting sustainable products also contribute to a smaller carbon footprint. Every small change can collectively lead to a substantial impact on the environment.

  • What are renewable energy sources?

    Renewable energy sources are energy types that are naturally replenished and sustainable over time. These include solar energy, wind energy, hydroelectric power, geothermal energy, and biomass. Unlike fossil fuels, which can deplete and contribute to environmental degradation, renewable energy sources produce little to no greenhouse gas emissions during operation. They play a crucial role in combating climate change by providing cleaner alternatives for electricity generation, heating, and transportation. Transitioning to renewable energy is essential for achieving long-term sustainability and reducing dependence on finite resources.

  • What is global warming?

    Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases like carbon dioxide and methane. This phenomenon is a significant aspect of climate change and is primarily driven by the burning of fossil fuels, deforestation, and industrial processes. The consequences of global warming include rising sea levels, more frequent and severe weather events, and disruptions to ecosystems. Addressing global warming is critical for ensuring a stable climate and protecting the planet for future generations.

  • Why is biodiversity important?

    Biodiversity is essential for maintaining the health and stability of ecosystems, which provide vital services such as clean air, water, and food. A diverse range of species contributes to ecosystem resilience, allowing environments to adapt to changes and recover from disturbances. Biodiversity also supports human well-being by providing resources for medicine, agriculture, and recreation. The loss of biodiversity can lead to ecosystem collapse, threatening food security and increasing vulnerability to climate change. Protecting biodiversity is crucial for sustaining life on Earth and ensuring a balanced and functioning planet.

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Summary

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Urgent Call for Climate Action Now

  • Greta Thunberg emphasizes the urgency of climate action, stating that the world has only 350 gigatons of CO2 left to emit as of now, down from 420 gigatons in 2018, and warns that at current emission levels, this budget will be exhausted in less than 8.5 years. She criticizes world leaders for their inaction and reliance on insufficient solutions, arguing that a 50% chance of limiting global temperature rise to 1.5 degrees Celsius is unacceptable, especially given the potential for irreversible climate impacts and the burden placed on future generations.
  • Thunberg expresses her disappointment in world leaders for prioritizing economic growth over environmental sustainability, stating that their empty promises have stolen the dreams and childhoods of young people. She calls for accountability, declaring that the youth will not forgive leaders who fail to act decisively against climate change, and asserts that the movement for change is gaining momentum, urging leaders to recognize the gravity of the situation and take immediate, effective action.
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