An American and a German astronaut spent just over six hours on a spacewalk outside the International Space Station for equipment repairs and maintenance.
Twitter sued the US government, claiming its free speech rights are being violated by restrictions on its ability to disclose numbers of secret orders.
The International Monetary Fund slashed its 2014 economic growth forecast for Brazil by a full percentage point, blaming weak investment and a consumer funk.
Mexico came under growing international pressure to solve the disappearance of 43 students who vanished after they were attacked by police linked to a drug gang.
Barack Obama said the chances of a US Ebola outbreak were "extraordinarily low" but vowed to press world leaders to step up the global fight against the epidemic.
Bolivia's socialist President Evo Morales is expected to score a reelection sweep next so solid that he likely will win on the first ballot and avoid a run-off.
US health officials said that a doctor who returned to a hospital after being treated for the Ebola virus did not have a new case of the infectious disease.
HP is poised to become the latest technology firm to split into two entities by separating its computer and printer businesses from its corporate hardware.