They convert carbon into other 'waste' products like oxygen. To put it simply it removes carbon from the carbon cycle.
Generally people would say that the result are published in journals, and it is true that Journals are often the first opportunity for many people to read about those results.
However, it takes a long time to publish in a journal, and people often present their results to a smaller audience at a conference before the journal is ready.
Body's major metabolic hormone is called Thyroid hormone
