The world this year

摘要

Barack Obama was inaugurated as America's 44th president. In a whirlwind first year in office, Mr Obama overturned a prohibition on federal funding for stem-cell research, eased some restrictions on dealing with Cuba, lifted a ban on people with HIV travelling to the United States, pushed Congress to pass health-care reform, promised to close the detention camp at Guanta-namo, pledged a cut in America's emissions and promoted the first Hispanic person to the Supreme Court.