www.theguardian.com/environment/2022/nov/24/could-hemp-be-a-key-tool-in-fight-against-climate-change
Hemp is one of the fastest-growing plants in the world and can grow 4 metres high in 100 days. Research suggests hemp is twice as effective as trees at absorbing and locking up carbon, with 1 hectare (2.5 acres) of hemp reckoned to absorb 8 to 22 tonnes of CO2 a year, more than any woodland. The CO2 is also permanently fixed in the hemp fibres, which can go on to be used for many commodities including textiles, medicines, insulation for buildings and concrete; BMW is even using it to replace plastics in various car parts.