The Chicago River is famous for being dyed green during the festivities. The tradition started in 1962, when city pollution-control workers used dyes to trace illegal sewage discharges.
They then realised that the green dye might be better suited for the holiday. The same year they released 100 pounds of green vegetable dye into the river enough to keep it green for a week.
Tools designed to ensure computer code in smart cars does not crash has been inspired by hungry penguins.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
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