Abstract: One class of knots which is straight forward to understand through its definition is alternating knots. However, although these classes of knots are abundant in knots with a low number of crossings, it becomes increasingly rare to find and even harder to detect as we encounter knots with higher crossing numbers. Alternating knots have certain properties that no other classes of knots have. For example, the degree of its Alexander polynomial is equal to twice its genus. Thus, we may use this to find when a knot is not alternating. However, proving a knot is alternating is a difficult task. We thus state a recent result giving an equivalent definition of knots using only the topology of its complement in S^3. This talk does not assume any knowledge about knots, and relevant definitions will be covered throughout the talk.