1. Quantitative and qualitative expansion of utilization of renewable wood biomass resources is required for establishment of a sustainable society and for prevention of global warming. 2. Vascular plants consisting of pipe-like fibers in stems containing lignin can efficiently reduce CO_2 to carbon-containing plant components, emitting O_2 during growing. 3. Creation of a new materials stream with CNFs from forest to high-tech industry is needed for activation of forest industry. 4. Ca. 66% of Japanese lands are covered with forest, consisting of unutilized wood resources. 5. The Paris agreement has been concluded in COP21, 2015 (United Nations Framework Convention on Climate Change 21th Conference), and Japan has set a reduction goal, by 2030, of 26% CO_2 emission from the 2013 year-level. The CNF utilization from wood biomass resources is expected to strongly contribute to the reduction of CO_2 emission because of their carbon neutrality. The next goal is reduction of 80% CO_2 emission by 2050!
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