claim: Two American researchers allege that U.S. government scientists have  skewed global temperature trends by ignoring readings from thousands of  local weather stations around the world, particularly those in colder  altitudes and more northerly latitudes, such as Canada.
evidence: It infected 500 million people around the world, or about 27% of the then world population of about 1.8 billion, including people on remote Pacific islands and in the Arctic.