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, also known as cyanobacteria, is capable of causing sudden death when high concentrations are ingested. This toxicity is known to occur worldwide and affects not only livestock, but wildlife, marine life, and humans as well. Blue-green algae tends to grow on the surfaces of farm ponds during the summer season.