they observe, make experiments, and model
While it would seem unhelpful to answer "Unanswered Scientific Questions." unfortunately Science is just too broad a subject with too many facets and questions in need of answers to be able to...
Pathology is the study and diagnosis of diseases. Therefore, scientists that work in the field of pathology are known as Pathologists.
The best scientists question everything. It's what they do.
No, these are just people who know the answer and want to share it.
scientific method
Filmmaker Roger Nygard on the Nature of Human Existence
E.O. Wilson: Low Cost of Protecting Biodiversity Hotspots
E.O Wilson: Save the Living Environment Before the Physical Environment
Susan Greenfield on Online Identities