A new US study has revealed that cow flatulence is responsible for a recent rise in atmospheric methane.
This month marks the 50th anniversary of a UFO sighting at Shag Harbour on Nova Scotia's South Shore.
Authorities in the US are urging people not to visit Cuba after a string of 'sonic' attacks on diplomats.
New evidence has shed light on exactly how huge stone blocks were transported to the site of the pyramids.
Scientists believe that they have finally worked out what type of creature 'Dickinsonia' actually was.
An unknown individual has been flushing thousands of euros down the toilet and nobody knows why.
US diplomats stationed in Cuba have recently been subjected to a series of mysterious 'health attacks'.
The unknown aircraft, which was being flown by pilot Eric Schultz, went down exactly one week ago.
A history researcher believes that he may have finally solved the mystery of the medieval manuscript.
An Australian researcher may have finally solved the mystery of what happened to La Perouse 230 years ago.
The unidentified radio pulses were picked up from an unknown source in a distant part of the universe.
Dozens of people had to be treated in hospital after a mysterious haze appeared in the area on Sunday.
The crew of the HL Hunley, one of the world's first combat submarines, inexplicably died at their posts.
The microorganism was discovered in the lakes of the Rauer Islands off the coast of Antarctica.
The next target of NASA's New Horizons probe is a space rock with some rather intriguing properties.
A sea algae boom has been credited with the rise of the first complex life forms in Earth's distant past.
The mystery surrounding a dinosaur made up of various mismatched body parts has finally been solved.
A radio station in Russia has been broadcasting a mysterious signal non-stop for more than 35 years.
39-year-old Kristy Manzanares was killed on Tuesday during a murder mystery dinner show on a cruise ship.
A mystery spanning over 55 years has finally been solved thanks to newly released CIA documents.