For decades, as the American economy tilted toward white-collar work, big urban counties thrived. Cities like New York, Boston, Chicago, and San Francisco boomed on the back of fast-growing service ...

词汇表 make sense of 理解，弄懂 in charge of 负责，掌管 curiosity 好奇心 vital 关键的，至关重要的 satisfied 得到满足 over-reliance 对…的过度依赖 vulnerable ...

The war in Ukraine has reached a turning point. Since the failure of Ukraine’s 2023 counteroffensive, Russia’s full-scale invasion settled into a predictable rhythm of summer and winter offensives, ...

Scientists have shown that brain connectivity patterns can predict mental functions across the entire brain. Each region has a unique “connectivity fingerprint” tied to its role in cognition, from ...

This tracker compiles developments in every state around the country that has begun or is considering redrawing its congressional district maps. This at-a-glance resource also spells out our current ...

Repatha (evolocumab) is a prescription medication used in certain situations to lower “bad” cholesterol and reduce serious heart-related risks. Here is a quick breakdown of how it works. Your liver ...

The World Health Organization has declared that an outbreak of Ebola in Central Africa is a public health emergency. Health officials are racing to trace contacts as the count of suspected cases rises ...