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.
Thoroughly cooking snails can eliminate the flukes. Symptoms of the liver parasite include listlessness, poor appetite, abdominal pain, and cholestasis, which is a condition where bile cannot flow from the liver to the intestines. This latter complication is what causes the skin to turn green.