Methane, CH4, is a chemical compound composed of one carbon atom and four hydrogen atoms. It is one of the most common gases in the universe, as well as on Earth. While it is valued for its energy-production capabilities, methane also has the ability to potentially wreak havoc on the Earth's fragile ecosystems.ethane, CH4, is a chemical compound composed of one carbon atom and four hydrogen atoms. It is one of the most common gases in the universe, as well as on Earth. While it is valued for its energy-production capabilities, methane also has the ability to potentially wreak havoc on the Earth's fragile ecosystems.
Symptoms of Palindromic rheumatism. The list of signs and symptoms mentioned in various sources for Palindromic rheumatism includes the 6 symptoms listed below: Joint pain. Joint swelling. Joint stiffness. Joint warmth. Skin nodules. Joint redness.
Thyroid disorders: Symptom Checkers. Review the available symptom checkers for these symptoms of Thyroid disorders: 1  Irritability -- Symptom Checker. 2  Nervousness -- Symptom Checker. 3  Unexplained weight loss -- Symptom Checker. 4  Heat sensitivity -- Symptom Checker. 5  Increased perspiration -- Symptom Checker. 6  Fine hair -- Symptom Checker. 7  Brittle hair -- Symptom Checker.