Researchers used X-ray imaging to study the structure of large pores in soil and how it affects water flow. They found that characteristics of these large pores, like size and connectivity, are more important for predicting how water moves through soil than traditional soil properties like texture or organic matter. By analyzing X-ray images of soil samples, they were able to create equations that accurately predict how fast water can flow through the soil. This information can help improve decision-making in managing soil and water resources.