In 1992, a Canadian man who stabbed his mother-in-law to death was found not guilty because he was sleepwalking.

The man fell asleep at home, in his living room. After a few hours, he got up and drove 23 kilometers to his in-laws’ house. Still asleep, he went inside, found a knife in the kitchen, and went to the bedroom where his in-laws were sleeping. He strangled and cut his father-in-law, who survived the attack. The mother-in-law died from repeated stab wounds and a brutal beating.

Medical experts agreed unanimously that the man was sleepwalking and thus was not performing voluntary acts.

The Canadian Supreme Court upheld the decision.

Around the world, shortwave radio operators have discovered stations that repeat seemingly senseless strings of numbers, often in a mechanically generated female voice.

Known as numbers stations, they’re thought to be used to communicate with spies in the field — but no government has ever acknowledged them.

The highlands of Laos contain thousands of stone jars, left by an ancient race that’s been completely forgotten. Some are 10 feet tall and weigh 14 tons.

Were they funeral urns? Containers for food? We’ll never know.

The cemeteries in Centralia, Pa., are more populous than the town itself. In 1962, a local trash fire ignited an eight-mile seam of underground coal, and the resulting sinkholes and carbon monoxide eventually forced the state to condemn every building in the borough. Centralia doesn’t even have a zip code anymore — the Postal Service revoked it in 2002.

Former residents might return to open a time capsule in 2016, but they won’t stay — the underground fire is expected to burn for at least another century.

Since 1883 there have been more than 240 reported sightings of “Champ,” the purported monster of Lake Champlain in New England.

For a figment, Champ is pretty popular. Vermont has put him on its endangered species list, and Burlington’s minor league baseball team is called the Vermont Lake Monsters.

Eager to see Stonehenge but afraid of bruising yourself on the hard, hard stones?

Visit Foamhenge, a replica made of polystyrene, 10 miles southwest of the original.

“J.D. Chevalley, a native of Switzerland, has arrived at an astonishing degree of perfection in reckoning time by an internal movement. In his youth he was accustomed to pay great attention to the ringing of bells and vibrations of pendulums, and by degrees he acquired the power of continuing a succession of intervals exactly equal to those which the vibrations or sounds produced.–Being on board a vessel, on the Lake of Geneva, he engaged to indicate to the crowd about him the lapse of a quarter of an hour, or as many minutes and seconds as any one chose to name, and this during a conversation the most diversified with those standing by; and farther, to indicate by the voice the moment when the hand passed over the quarter minutes, or half minutes, or any other sub-division previously stipulated, during the whole course of the experiment. This he did without mistake, notwithstanding the exertions of those about him to distract his attention, and clapped his hands at the conclusion of the time fixed. His own account of it is thus given:–‘I have acquired, by imitation, labour, and patience, a movement which neither thoughts, nor labour, nor any thing can stop: it is similar to that of a pendulum, which at each motion of going and returning gives me the space of three seconds, so that twenty of them make a minute–and these I add to others continually.'”

— The Mirror of Literature, Amusement, and Instruction, Jan. 15, 1831

The National Statuary Hall in the United States Capitol is a “whispering gallery” — because of the room’s shape, whispers at one end of the room can be heard clearly at the other.