Germany declared war on France and sent its first wave of troops to Belgium to start the attack.
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President Barack Obama announced his Clean Power Plan to take action on climate change.
Tokyo had its hottest day on record, reaching a staggering 102.4°F (39.1°C).
NASA's Messenger probe launched from Cape Canaveral, Florida.
The Statue of Liberty pedestal reopened after the 9/11 disaster that occurred in 2001.
The American Dental Association was founded in Niagara Falls, New York.
