Answer:
Journals, papers, magazines and every other reliable source of information which is certified and updated.
Step-by-step explanation:
It is common for a scientist to regularly read different types of journals related to his/her fields of investigation. Also, there are online and certified databases available, in which a person can search for new publications by the use of specific key words. No less important is the direct contact between fellow scientists in order to obtain new information which has not been published yet.