Flight delays and cancellations can be stressful, but knowing your rights can help. CNN's Barry Neild explains what airlines are required to do, how to claim refunds and the best ways to stay ahead of potential disruptions.

POV: WHAT IS MARPOL CONVENTION! The International Convention for the Prevention of Pollution from Ships (MARPOL) is the main international convention aimed at preventing pollution of the marine environment from ships. Adopted by the International Maritime Organization (IMO), it works by regulating the discharge of harmful substances from ships, including oil, noxious liquids, harmful substances in packaged form, sewage, and garbage. MARPOL is divided into six Annexes that address these different