A Berlin start-up is developing vegan tuna made from seaweed. The taste is convincing, but algae can contain pollutants like heavy metals. To produce a cleaner alternative, researchers are therefore working on new cultivation methods involving saline groundwater. Other hot topics in cutting-edge agriculture include lab-grown meat from animal cells and improving disease resistance in wheat through genetic diversity on fields. Livestock like sheep also have a role to play in how experts are rethinking sustainable agriculture. The future of nutrition is diverse, innovative and backed up by science.