The article "3D-Printed Liver Models Help Surgeons "Rehearse" Cancer Surgeries" from BBC Science Focus explains how scientists have developed a method to 3D print realistic models of cancer patients' organs. These models include imitation tumors and blood, allowing surgeons to practice procedures before performing them on real patients.

Learn how Dr. Mark Kendall is working on improvements to the way vaccines roll out, work, and are perceived. He created the nanopatch, which delivers vaccines more effectively than a needle just below the surface of the skin where immune cells live. He envisions a future eradicating diseases through better delivery and perception of vaccines.This video is excerpted from BBC News.