Ucsusa:忧思科学家联盟是一个非盈利性质的非政府组织，由全球10万多名科学家组成;主要目的是提出一些报告和忠告，避免科学技术遭到滥用。该组织经常对美国政府的政策提出批评，并曝光一些鲜为人知的内幕。

忧思科学家联盟全名为(The Union of Concerned Scientists，UCS)成立于1969年，该组织最初由美国麻省理工学院的教授们倡议组建，主要目的是提出一些报告和忠告，避免科学技术遭到滥用。该组织经常对美国政府的政策提出批评，并曝光一些鲜为人知的内幕。

下面是有关于该组织的英文介绍:

The Union of Concerned Scientists is the leading science-based nonprofit working for a healthy environment and a safer world. UCS combines independent scientific research and citizen action to develop innovative, practical solutions and to secure responsible changes in government policy, corporate practices, and consumer choices.

What began as a collaboration between students and faculty members at the Massachusetts Institute of Technology in 1969 is now an alliance of more than 400,000 citizens and scientists. UCS members are people from all walks of life: parents and businesspeople, biologists and physicists, teachers and students. Our achievements over the decades show that thoughtful action based on the best available science can help safeguard our future and the future of our planet.