The U.S. baby formula shortage has sparked a surge of interest at milk banks around the country, with some mothers offering to donate breast milk. It's a pathway that won't work for every formula-fed baby, especially those with special dietary needs, and comes with challenges. The shortage stemmed from safety recall and supply disruptions and has captured national attention. President Joe Biden has also urged manufacturers to increase production and discuss with retailers how they could restock shelves to meet regional disparities.