Forwarded from Social Justice Watch
Views of Homosexuality Around the World | Pew Research Center source
Forwarded from 数学及其应用
困扰专家50多年的数学问题，被一个来自缅因州的研究生几天就解决了:
https://www.bostonglobe.com/2020/08/20/magazine/math-problem-stumped-experts-50-years-this-grad-student-maine-solved-it-days/
https://www.bostonglobe.com/2020/08/20/magazine/math-problem-stumped-experts-50-years-this-grad-student-maine-solved-it-days/
The Boston Globe
A math problem stumped experts for 50 years. This grad student from Maine solved it in days
“That’s ridiculous,” Lisa Piccirillo thought when she first learned about the Conway knot problem. “We should be able to do that.”
Forwarded from 政治观察
Telegraph
【林垚】顶尖科学家何以会是反哲学的哲学盲
2018年3月14日，一生饱受渐冻症困扰的著名物理学家霍金（Stephen Hawking）逝世，诸多纪念文章应声出炉。霍金当然是值得纪念的：他的身残志坚是对无数人的巨大激励；《时间简史》令许多非专业读者爱不释手；黑洞辐射理论虽然排不进当代理论物理最重量级发现的行列，毕竟仍是巨大的学术成果，而且若非斯疾所限，他肯定能在学术上走得更远；除此之外，霍金还是一位积极的社会活动家，从毕生致力推动性别平等，到联名反对伊拉克战争、声援以色列境内遭到歧视的巴勒斯坦人，就算与他政见不同者，也不能不肯认他对知识分子公共责任的持之以恒的担当。…