If the Copyright Office has no confirmation that a composer or song-writer is still living and it has been 75 years since the first copyright protection order was granted, or 100 years since the recognized creation date of the piece, it becomes public domain.
Exposure to blue-green algae can cause rashes, skin and eye irritation, allergic reactions, gastrointestinal upset, and other effects. At high levels, exposure can result in serious illness or death.
There are two forms of blue-green algae. One is called Spirulina, and the other is called Aphanizomenon flos-aquae, or AFA. These are the forms of blue-green algae that are most commonly consumed. This super food can increase endurance, mental stability, and reduce stress. Myths Surrounding Algae.