Artificial photosynthesis energy conversion efficiency (due to photosynthesis' own low efficiency in converting sunlight to biomass), the cost of harvesting and transporting the fuel, and conflicts due to the increasing need of land mass for food production. The purpose of artificial photosynthesis is to produce a fuel from sunlight that can be stored conveniently and used when sunlight is not available, by using direct processes, that is, to produce a solar fuel. With the development of catalysts able to reproduce the major parts of photosynthesis, water and sunlight would ultimately be the only needed sources for clean energy production. The only by-product
What U Need? Song Festival in Busan, South Korea. "what U need?" was performed together with "Lose Control" at the SMG New Year's Eve Gala 2017 in Baoshan Sports Centre, Shanghai on December 31, 2016. "what U need" stayed at #1 on the Alibaba Real Time Music Chart in China for three consecutive weeks. The single and the music video appeared at the top of music charts in China, Hong Kong, Japan, Malaysia, Thailand, UK, Turkey, Canada and the United States. The song hit the #4 spot on the China V Chart as well as in Billboard's World Digital Songs. Additionally, the song