Between 1912 and 1914 settlers, officials and a railway engineer in British East Africa described a shaggy, bear-like animal the Nandi called the Chemosit. Their own journal could not agree whether it was one creature or several known ones.

From late 1948 bright green lights streaked low over New Mexico near Los Alamos and Sandia Base. A meteor expert said they were not meteors, a 1949 conference said they were natural, and the camera project meant to settle it photographed nothing.

For more than a century people have reported a long creature in British Columbia’s Okanagan Lake. The syilx people knew a lake spirit called nx̌ax̌aitkʷ long before settlers named it Ogopogo, and skeptics point to floating logs, waves and beavers.

A stretch of Lake Michigan between Manitowoc, Ludington and Benton Harbor has been called the Michigan Triangle. Two of its famous disappearances have since been found on the lake bed, and one airliner never has.

Over about 25 hours in April 1977, three Dover teenagers separately reported a thin, big headed creature with glowing eyes. We follow the sightings in order and weigh the moose, foal and prank theories.

Since at least 1913 people have reported glowing lights above Brown Mountain in western North Carolina. Two USGS studies blamed trains and cars, and a modern camera project is still trying to catch them.

In the summer of 1946 Swedes reported close to 1,000 sightings of rocket-like objects. The military dragged lakes for wreckage, and US intelligence told President Truman the Soviets were probably testing missiles.

In March 1876 what looked like flakes of meat fell from a clear sky onto a farm in Bath County, Kentucky. Samples went to scientists, and their findings sparked a debate that still has no firm answer.