SciDev.Net Director Nick Ishmael Perkins observes World Press Freedom Day by reflecting on how science writing is affected by censorship — and self-censorship, a "common practice among science journalists. If you anticipate that your attempts to cover a story might result in alienation, or reprimand, from the expert sources you depend on or the media outlet that pays you, then you may have to make a judgement call about that problem relative to society’s need to know."
