Zero Gravity - Pen

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity. To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in
* zero gravity,
* upside down,
* underwater,
* any surface including glass and
* at temperatures ranging from below freezing to 300 degrees Celsius.
But the Russians used a pencil.