Dr. Eva Kanso will discuss two problems in fluid mechanics inspired by biological systems. The first problem concerns the emergent patterns of active particles, such as bacteria and self-propelled colloids, confined in microfluidic channels. I will show interesting transitions in the global patterns, including the development of phonons and density shock waves. The second problem is inspired from bird flight and seed dispersal by wind. She will discuss the stability of passive flyers in oscillatory flows and the role of wing flexibility in enhancing or hindering flight performance.