The global economy grew at its fastest rate for more than a year in the second quarter.
Gross domestic product (GDP) across the 34 countries of the Organisation for Economic Cooperation and Development (OECD) rose 0.5% in the period, the body said.
It was the fastest rise since the first quarter of last year, when GDP across the OECD area went up by 0.6%.
GDP fell flat in the final three months of last year.
Year-on-year growth in the second quarter was 0.9%, with the UK and the US each improving by 1.4%, making them the best performing of the top seven economies amid sluggish performances from France and Germany and a 2% slide in Italy.
The figures come shortly after the eurozone emerged from six straight quarters of recession to post 0.3% growth for the second quarter.
In the UK, the recovery has lagged behind other major economies and GDP remains 3.3% off its pre-recession peak.
But quarter-on-quarter growth doubled to 0.6% in the second quarter and improving data from industry as well as better retail sales and an improving housing market have helped to boost confidence and hopes for a sustained upturn.
The US is seen as further down the track to recovery although fears over the withdrawal of central bank stimulus measures that have been nursing it back to health are troubling global stock markets.
Anxiety about the withdrawal of the support is having an impact on the world economy as investors become more anxious about emerging markets.
India has been particularly badly hit, with the rupee plunging in recent days amid concerns over the government's economic management.