Dario Amodei, OpenAI Tasha McCauley, GeoSim Jan Leike, DeepMind Helen Toner, Open Philanthropy Project Owen Cotton-Barratt, Future of Humanity Institute.

Source: Effective Altruism Global (video).

Effective Altruism is a social movement dedicated to finding ways to do the most good possible, whether through charitable donations, career choices, or volunteer projects. EA Global conferences are gatherings for EAs to meet. You can also listen to this talk along with its accompanying video on YouTube.