With the London summer games at an end, economist Jose Ursua discusses whether or not Olympics have a financial impact for host cities, and the broader implications for the global economy.

A growing population will add pressures to the world and the environment, and there must be greater focus on women’s education and reproductive health, says demographic expert John Bongaarts.

President Vladimir Putin appears to be in firm control of Russia today, but in order to maintain it in the years ahead, he will have to manage at least three primary challenges.