Starbucks' pumpkin spice latte turns 20 with autumn right around corner

The nights are getting longer, and the days are slowly getting shorter. As summer winds down, another way to tell that fall is fast approaching is by dropping into Starbucks.

The pumpkin spice latte is already back on the menu and August isn't even over yet.

The fall-inspired drink turns 20 this year and has spurred a billion-dollar industry of all things pumpkin.

Global’s Touria Izri has more on what's behind the latte's longevity.