ICEO&SI 2025will be held at National United University, Taiwan in July, 2025. This conference is aiming at creating a platform for scientists and researchers in related fields who concern the sustainability of the earth to exchange and share knowledge and experiences, essentially to seek the answers to address the threats the human beings are facing nowadays, and to provide the suggestions and insights to the policymakers for further actions. ICEO&SI 2025 will be held as an in-person event. Please note that only abstract submissions in English will be accepted; full papers are not required for this conference. We extend a formal invitation to you to participate in ICEO&SI 2025 and share your research findings and observations on the state of our planet. We look forward with great anticipation to the opportunity to meet you in person in Taiwan.