The article discusses how advancements in renewable fuel production are widening the possibilities beyond traditional feedstocks like soybean oil and used cooking oil. Michelle Young's team at the Chevron Technology Center is focusing on innovative methods such as carbon utilization to create lower carbon intensity fuels. Catalyst development plays a crucial role in converting CO2 into sustainable aviation fuel and other renewable options. By combining CO2 with hydrogen and solar energy, new processes aim to produce methane and RNG for transportation. The U.S. Department of Energy highlights the interchangeability of RNG with natural gas, making it a viable alternative for existing infrastructure. Additionally, biological sources like algae and microbes show potential for capturing CO2 and converting it into useful molecules for transportation fuels with the aid of catalysts.