To understand the urgency of emissions reductions, policymakers and citizens need a full analysis of what is at stake.
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Isaacman also said the agency would halt work to develop a more powerful version of the SLS rocket's upper stage, known as the Exploration Upper Stage, or EUS. Instead, NASA will go forward with a "standardized," less powerful stage but one that will minimize major changes between flights and utilize the same launch gantry.，这一点在新收录的资料中也有详细论述