RIO DE JANEIRO (Thomson Reuters Foundation) - The Amazon rainforest holds the biological keys to kick-start a "fourth industrial revolution" if its biodiversity is protected, said a study published on Friday.

(Reuters) - For Citigroup Inc executives, being asked why they won't sell their Mexican bank subsidiary Banamex is as annoying as the yapping of a Chihuahua. But the question keeps coming up.

MOSCOW (Reuters) - Russian President Vladimir Putin said on Friday World Anti-Doping Agency (WADA) records leaked by hackers raised a lot of questions with healthy athletes seemingly taking banned substances, TASS news agency reported.

(Reuters) - Former Olympic champion Valeri Liukin has replaced Martha Karolyi as United States women's team coordinator, USA Gymnastics have announced.

BUENOS AIRES (Reuters) - Executives applauded the opening of Argentina's economy at a major business forum in Buenos Aires this week but many said they are looking for improved infrastructure, more flexible labor laws and other reforms before committing investments.

MARGARITA ISLAND, Venezuela (Reuters) - Once known as the "Pearl of the Caribbean," the former Venezuelan tourist hot spot Margarita fell on hard times amid the country's economic crisis with trash on streets, scarcities of food and water, rampant crime and a dwindling number of foreign visitors.

PARIS, Sept 16 (Reuters) - Oil and gas giant Total could start the second phase of its Incahuasi gas project in Bolivia as early as 2017 if the right market conditions and incentives for investments are in place, the company's director for the Americas said on Friday.

BRASILIA (Reuters) - The prospect of turbulence in emerging markets due to U.S. rate rises could deter Brazil from quickly reducing its stock of currency swaps and should encourage the government to press ahead swiftly with economic reform, the central bank's governor said in an interview.

HAVANA, Sept 16 (Reuters) - A handful of independent, web-based news outlets in Cuba are chipping away at the Communist-run island's half-century state media monopoly, challenging the official version of reality.