Radon is a dangerous gas. It is colorless and odorless and is always being emitted from our planet-don't worry, it's not enough to harm you.
Copyright for published works in the USA has been according to a federal copyright statute, since the first U.S. copyright statute in the year 1790. Before the Copyright Act of 1976 became effective on 1 Jan 1978, unpublished works were. protected by state law, known as common-law copyright.
Copyright law gives a copyright holder (usually the creator of the work) a set of rights that they and they alone can exploit legally (save for exceptions such as fair use). Those rights include: 1  The right to reproduce (copy) a work.  The right to create derivative works based upon it.