According to scientists, cutting carbon-dioxide emissions is an essential part of reducing catastrophic risks from climate change.

科学家表示，减少二氧化碳排放量是缓解由气候变化导致的灾难性后果的重要一步。

They are walking out of school to demand action, looking with disbelief at our inability to deviate away from potentially catastrophic risks.

他们走出学校要求采取行动，难以置信地看着我们无法摆脱潜在的灾难性风险。