Back to Top Symptoms. The classic symptoms of bronchitis may be like those of a cold. You may have a tickle in the back of your throat, which leads to a dry, irritating cough. As the infection gets worse, you may cough up thick, yellow mucus that may (rarely) be streaked with blood.ack to Top Symptoms. The classic symptoms of bronchitis may be like those of a cold. You may have a tickle in the back of your throat, which leads to a dry, irritating cough. As the infection gets worse, you may cough up thick, yellow mucus that may (rarely) be streaked with blood.
Global warming and climate change are terms for the observed century-scale rise in the average temperature of the Earth's climate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming.
The United Nations has meetings where world leaders agree on what to do about global warming. Every five years, the Earth Summit happens.