07 Nov 2022 --- Published during the build up to COP27 – the United Nations conference on climate change currently taking place in Sharm el Sheikh, Egypt – a new study in Trends in Plant Science has warned about the dangers of increasing levels of atmospheric carbon dioxide (CO2) on the nutritional value of crops. The researchers argue that the CO2 increase creates difficulties for plants to obtain the necessary minerals to grow nutritious food, especially two primary nutrients essential for human health.