US President Barack Obama unveils what he calls "the biggest, most important step we have ever taken" in tackling climate change.
Puerto Rico confirms that it failed to make a debt payment at the weekend, in the latest sign of the economic crisis in the US territory.
Factory activity in the world's second largest economy, China, shrank the most in two years in July as new orders fell more than expected.
Why eurozone economies aren't in rude health
Why work isn't what it used to be
From boom to bust in Swiss border towns
How our daily activities contribute to the size of the economy
The US firm which wants to get more things invented
Iran looks for investment opportunities
The scale of cuts being imposed on governments departments will necessitate a reinvention of some services we take for granted
History of climbing Everest
What book should you take on holiday?