Researchers are engaged in an unprecedented effort to recruit the tens of thousands of healthy volunteers needed to finish testing coronavirus vaccines in late stages of development.

Two U.S. carriers completed hundreds of aircraft launches in a display of American military power in the disputed South China Sea.

Trump has seized on saving statues and monuments as a winning issue for his re-election, attacking protesters and Democrats in remarks over July Fourth weekend.

Publication of scores of research papers from China-based authors that appear to have reused identical sets of images has raised questions about scientific integrity.

An Iranian conglomerate owned by the country's military and tied to its missile program has established a retail foothold in Venezuela.

Hong Kong libraries have pulled books for review under China's new national-security law for the city, including two by pro-democracy figures.