Why does a government measure its own air, ocean and land? The story runs through the two free numbers an Alaska fishing family bets a year on, the forecast and the fish count. It starts with Jefferson's 1807 Survey of the Coast and follows the lineage of agencies that became NOAA, the EPA and NCAR.
The Survey of the Coast is called the oldest scientific agency in the government, though real fieldwork began only years after 1807. Whether Congress was right to remove Hassler in 1818, with his defenders citing accuracy and critics preferring any chart, is also argued.



