David Knuffke Is an Educator Based on Long Island.

You can learn more about his work here.

This is not an exact science when you estimate the amount of oil,” she added. “However, NOAA is telling me now that they prefer we use the 5,000 barrels (210,000 gallons) a day as an estimate of what has actually leaked from this well and will continue to leak until BP secures the source.
What it sounds like when things go from bad to worse

Powerpoint Doesn't Play Well In Uncle Sam's Army