It is claimed that this boat runs on biodiesel made form the crew's fat and that it is carbon-neutral. But how is that calculated?

Are boaters deliberately trying to kill manatees?

It does seem slightly odd that the famous Nobel Peace Prize should go to someone who is famous, more or less, for talking loudly.

China and India are adopting personal automobiles. If they follow our path, each country will put itself in a position of its entire economy being vulnerable to interruption of its oil supplies.