Scientists say that current concerns over a tipping point in the disappearance of arctic sea ice may be misplaced.

Polygamist sect leader Warren Jeffs faces up to life in prison after being convicted on child sexual assault charges by a jury in Texas.

Riot police in the Chilean capital, Santiago, use tear gas and water cannon to break up protests by students demanding educational reform.

US congressional leaders say they have reached a stop-gap deal over a funding dispute which has partially shut the US air safety agency and left 74,000 people off work.

US Secretary of State Hillary Clinton says the Syrian government has killed at least 2,000 people in its attempts to crush opposition protests.

The entire 26-strong police force of the Mexican town of Ascension resigns following deadly attacks by drugs gangs.

Asian markets tumble after Wall Street has worst sell-off in more than two years on fears about US economy and European debt.

Brazilian President Dilma Rousseff replaces her Defence Minister, Nelson Jobim, after he made disparaging remarks about colleagues.