Tuberculosis killed 1.25 million people last year, making it the world’s leading cause of death from an infectious disease. But it receives only $5.7 billion of the $22 billion of funding needed. Drug-resistant strains are surging and cases are climbing again. We look at the problem, and what solutions exist.

Lead poisoning is the hidden pandemic stripping IQ points and opportunity from one in three children, and causing 1.5 million deaths a year. But it receives barely a fraction of the funding better-known diseases enjoy. From backyard battery recycling to lead-laced spices, the sources are fixable and the solutions are cheap.