President Joe Biden has said he is hopeful that America can "mark independence" from Covid-19 on 4 July if people get vaccinated. In his first primetime address as president, Mr Biden said he would order states to make all adults e...

  Fireworks (烟火) explode (爆炸) over the Philadelphia Museum of Art, top, in Philadelphia on Saturday, July 4, as thousands line the Benjamin Franklin Parkway. The New York City skyline (以天空为背景的轮廓线) is seen in t...