The 2015 edition of the New Horizons in Science briefings, hosted by Knight Science Journalism at MIT as part of ScienceWriters2015, concluded on Oct. 12. Science sessions took place on the campus of the Massachusetts Institute of Technology Sunday and Monday. New Horizons is held in conjunction with the annual meeting and workshops of the National Association of Science Writers. The workshops were held at the Hyatt Regency Cambridge, which served as the conference hotel. ScienceWriters2015 also featured an extensive assortment of science tours, excursions and other activities organized by our hosts.