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.
What are the symptoms of exposure to blue-green algae? Symptoms from drinking water that contain blue-green algae can include: headaches, nausea, fever, sore throat, dizziness, stomach cramps, diarrhea, abdominal pain, vomiting, muscle aches, mouth ulcers, and blistering of the lips.
Blue-green algae poisoning in livestock. Blue-green algae can produce neurotoxins, liver toxins and skin allergens. Livestock can be poisoned by ingestion of algae either in the water or as dried mats on the shore, or from drinking water where algal death has released considerable toxins into the water.