Stocks waver on Wall Street ahead of speech by U.S. Fed chair

FILE - This Wednesday, Aug. 2, 2017, file photo shows the Federal Reserve Building on Constitution Avenue in Washington. (AP Photo/Pablo Martinez Monsivais, File) FILE - This Wednesday, Aug. 2, 2017, file photo shows the Federal Reserve Building on Constitution Avenue in Washington. (AP Photo/Pablo Martinez Monsivais, File)

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Radioactive capsule that fell off truck found in Australia

Authorities in Western Australia on Wednesday recovered a tiny but dangerous radioactive capsule that fell off a truck while being transported along a 1,400-kilometre Outback highway last month in what an official said was like finding the needle in the haystack.

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