Colorado became the 38th state to join the United States of America.
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A rainfall survey named 'It is raining plastic' announced that tiny plastic particles were found in 90% of rain samples in Colorado, US.
JonBenét Ramsey was found dead.
The Eden train wreck happened when a trail derailed from Denver, Colorado, to St Louis, Missouri.
Mexican grill chain Chipotle opened its first restaurant.
Ted Bundy escaped from jail.
