Could you please enlighten me on the prospects of IOTA? I'm curious to know whether this cryptocurrency holds any potential for long-term growth and sustainability. Given its unique features such as the Tangle, how does it stand out from its competitors? Could you also elaborate on the challenges it might face in the future and how it plans to overcome them? Additionally, I'm interested in knowing about the possible applications of IOTA in various industries, especially in areas like the Internet of Things. Thank you for your insights.