It’s not your average top-ten list, that much is certain. Jeffrey Marlow’s list, distilled from Thomson Reuters† includes some familiar notions like, “Impact of Climate Change on Food Crops”, and, “Ocean Acidification and Marine Ecosystems”, but also some wake-up suggestions and reminders such as, “Enhanced Visible Light Photocatalytic Hydrogen Production”:
Hydrogen fuel cells have been “the next big thing” in energy for years, with proponents trumpeting their potential to drastically reduce our dependence on fossil fuels. But producing the hydrogen has been a stumbling block. New materials – complex catalysts often involving metals such as cobalt, nickel, iron, or molybdenum – have helped scientists learn more about the molecular mechanisms of water-splitting hydrogen production. With continued progress, futuristic fantasy of sunlight-powered cars may be resuscitated.
† see King and Pendlebury.