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.
Most animals that ingest blue-green algae toxins die acutely. Treatment is supportive and symptomatic. In some cases animals can recover, but death typically occurs so quickly that the animals are found dead near the water source.