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As China moves to contain an outbreak of African swine fever, the US Department of Agriculture has taken steps to keep the disease from entering the country and devastating the American pork industry.

Apple has topped Forbes's 100 most valuable brands list for the ninth consecutive year. Valued at 5.5 billion, Apple is the first company to cross the 0 billion threshold, Forbes said.

Are there reasons for optimism in 2018? An injection of hope is urgently needed for the world's top two economies to sail the charted course.

Arlington is directly across the Potomac River from Washington. Large government contractors have offices and lobbying operations there. However, many of its 1980s-era office buildings have vacancies after thousands of federal employees moved elsewhere. Being near the nation's capital could help Amazon with lobbying efforts as the company faces rising scrutiny from politicians.

Argentina produces enough food to feed about 10 times its population of about 45 million and is an agricultural powerhouse, but most of that goes to export markets.