Dry humor - Global warming proof

Bitter cold stops biodiesel buses in Bloomington - Fort Mill, SC

BLOOMINGTON, Minn. — The Bloomington School District is closing schools Friday, after extremely cold temperatures caused the biodiesel fuel in school buses to clog.

The problem left dozens of students stranded Thursday - some for up to 30 minutes in the dangerous cold.

Elements in biodiesel fuel turn into a gel-like substance at temperatures below 10 degrees. District spokesman Rick Kaufman said some buses couldn't operate at all and others stalled while picking up students.