Why do I have to pay for one part of the meeting but not the other?

Why do I have to pay for one part of the meeting but not the other?

The NASW portion of ScienceWriters is solely funded by the National Association of Science Writers. While a registration fee is charged to offset some of NASW's costs, that fee covers only a portion of the total NASW workshop costs. New Horizons is hosted each year by different universities, which provide funds to cover the meeting.