Spanish olive oil producers are facing a 25% duty on their product in the United States, resulting in an 81% decrease in exports to the country. This situation, worsened by the COVID-19 pandemic, has led to significant financial losses. However, increases in imports from Tunisia and Portugal are helping to offset some of the losses. These duties were introduced during the Trump administration due to complaints about EU support for Airbus, and Joe Biden has not yet indicated any plans to remove or reduce them. In other news, a Russian laboratory is using advanced DNA testing to identify fish substitution in food products, a method that could also be used to measure the proportion of different components in complex samples.