Convoy of Life – Scott Pelley reports from Ukraine, where more than 1,000 children are fighting cancer amid Russian attacks on hospitals and the power grid, putting their lives in immediate danger. A renowned American hospital and 21 countries have stepped in to help. Litigation Funding – Lesley Stahl reports on litigation funding, a relatively new multi-billion-dollar industry where investors fund lawsuits in exchange for a slice of the award. It can be lucrative and help level the playing field against big corporations with deep pockets, but it's proliferating with little rules or oversight. Lourdes – Bill Whitaker reports from the Sanctuary of Our Lady of Lourdes, a Marian shrine in southern France and the site of 70 medical miracles recognized by the Catholic Church. 60 MINUTES goes inside the Lourdes Office of Medical Observations, where world-renowned doctors and researchers conduct decade-long investigations into the dozens of claims of miraculous cures made every year. They determine which cases can be medically explained and which cannot.