WASHINGTON, March 3 (Xinhua) -- U.S. President Donald Trump said Monday that 25 percent tariffs on Mexico and Canada will take effect on Tuesday, March 4. "Very importantly, tomorrow, tariffs, 25 ...

US President Donald Trump said Monday the United States "will not put up with" what he perceived as Ukrainian President ...

US President Donald Trump said Monday that 25 percent tariffs on Mexico and Canada will take effect on Tuesday, March 4.

本周一（3月3日）安省省长福特在新闻发布会针对美国的关税做出强硬表态，并宣布了一系列政策，推动“购买国货运动”。这包括：省府将通过立法，要求所有零售商在货架上明确标注产品是否为加拿大制造；以及安省政府所购买的商品、服务，也将优先采用本省和加拿大的产品。

• 亚马逊云科技（Amazon Web Services，AWS）推出了首款量子计算芯片Ocelot，旨在解决该领域面临的最大障碍之一：纠错。AWS称这款芯片可将量子纠错成本降低90%，这一重大突破将加快实用、容错量子计算机的开发进程。

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...