The theme of HK SciFest 2018 is "sustaining". We hope to deepen the public's understanding on the contributions of science and technology in sustainable development in four perspectives: individuals, society, the Earth, and the Universe. With the joint efforts of 91 partners and units, we have developed more than 160 unique and fantastic scientific activities for you including: You can enjoy science in a joyful atmosphere in the "Fun Science Carnival". In the "Croucher Science Week", Nanogirl from New Zealand, Science Made Simple from Britain and local Croucher Scholars present interesting science demonstrations and workshops. "Making and STEM" will challenge your thinking in STEM. In the film review programme "Sci-Fi-Sci", science experts and veteran film critics explore the science behind science fiction films together with you. Scholars share their personal stories to inspire the youths in the science forum "From Anecdotes to the World". The programmes are diverse in nature, including exhibitions, visits and guided tours, science workshops, science carnival, science drama shows, science lectures and forums, film and post-screening talks, fun experiment classes and science competitions. You may have a glimpse of the programmes through this highlight.