Researchers used a special laser 3D printing method to melt fake lunar soil into layers and fused it with a base surface to manufacture small, heat-resistant objects, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests.

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But coordination remains a huge challenge. Weapons procurement is a glaring example. While the United States employs around 30 different weapon systems, Europe has an often duplicated 178. "Inefficient, expensive and slow," was the damning conclusion last week of the President of the European Parliament, Roberta Metsola.

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The policy is "all stick, no carrot", says de Bolle of the Peterson Institute. "And it doesn't seem like they understand that they do need carrots."。关于这个话题,PDF资料提供了深入分析

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