<?xml version="1.0" encoding="UTF-8"?><item href="/energy/news/stories/2021/06302021-greening-air.php" dsn="news"><link>https://www.forbes.com/sites/uhenergy/2021/06/30/greening-air-travel-through-sustainable-fuels-will-be-a-tough-climb/?sh=aa4aed258aa5</link><featured/><top-stories/><pubDate>06/30/2021 12:00:00 AM</pubDate><title>Greening Air Travel Through Sustainable Fuels Will Be A Tough Climb</title><subtitle/><description>Greening Air Travel Through Sustainable Fuels Will Be A Tough Climb</description><author/><image><img src="" alt=""/></image><categories>Energy Production,Distribution &amp; Infrastructure,Policy &amp; Governance,Carbon Management</categories></item>