Forecast This short video helps explain why markets can be as unpredictable as the weather. Related Content Should You Ever Retire? A growing number of Americans are pushing back the age at which they plan to retire. Or deciding not to retire at all. Life and Death of a Twenty Dollar Bill How long does a $20 bill last? Medicare At 65+ 65 or older? It may be time to enroll in Medicare. Read to learn if you’re eligible.