> ## Content Index
> Fetch the complete content index at: https://www.cascadepbs.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# The Largest River On Earth Is In The Sky
- URL: https://www.cascadepbs.org/show/its-okay-be-smart/episode/the-largest-river-on-earth-is-in-the-sky-ayxiyl/
- Published: 2024-04-02T23:16:44.000Z
- Updated: 2025-08-20T09:54:29.000Z
- Description: Scientists have discovered the largest river on Earth, and it’s in the sky above.
- Author: Cascade PBS Staff
- Tags: Be Smart, Season 6, Episode 29, #ZZZ_Episode_f05fd89a-b598-45a2-9522-4e9dd213eebd, #episode, #ZZZ_Show_dc38a6e9-266e-43c1-b647-45e7445fad27, #v1.16

What’s the largest river on Earth? If you said “the Amazon”… you’re only half right. Scientists have discovered an even bigger river in South America, and it’s in the sky above the Amazon rainforest. Turns out, this sky river is the reason there’s a rainforest at all…