The traditional Chinese lunar calendar divides the year into 24 solar terms. Winter Solstice (Chinese: 冬至), the 22nd solar term of the year, begins this year on Dec 21 and ends on Jan 4. On the first ...

国际人权组织保护卫士(Safeguard Defenders) ...

人工智能是当下最受关注的技术，但十年之后呢？一些专家说，下一个改变游戏规则的技术将是量子计算。《华尔街日报》记者走访了IBM量子计算实验室，以了解这场竞赛的前沿动态。