Science

Is hydrogen the fuel that will help us kick our dependence on foreign oil? The world's major car companies are in a race. They are trying to get models powered by hydrogen fuel cells to showrooms as early as next year.
Work is almost complete on what may be the largest study ever attempted of animal feedlots. Minnesota farmers, government officials, and environmental groups all had a role in designing the report, which has taken four years and cost $3 million.
The Minnesota Department of Health is planning to gather more data from individual medical records for use in tracking the spread of diseases and how they're treated in the state. But privacy advocates fear the information could be misused.
Two Minnesota school districts are launching unique online learning programs this week. Hopkins and Chisago Lakes have broken new ground by creating cyber charter schools within their districts to deliver instruction to some students over the Internet instead of traditional classrooms.
The movie "Signs," based on the crop circle phenomena, has become a box office hit of the summer. Since its premiere, a Minnesota prankster has received a lot of renewed attention. More than two decades ago, Waterville resident David Olson created what's believed to be the first crop circle in the United States.