The "Underworld" collection of videos features videos typically found on "sponsored" tabs in web browsers and includes titles such as "15 Creepiest Photos...," "Disasters that could end the Earth," and "Most Dangerous People on Earth." In fact, they describe their site as "Educational videos about Top 5's, Mysteries, Disaster Scenarios and more".
The "Top 10 Zone" collection of videos is a listing of gadgets that you should own and includes everything from camping gear and fitness trackers to bike locks and backpacks.
The final contributor, "Brains techKnowlogy," offers 9 videos, most of which are "How-To's" with an emphasis on making Popsicle-stick knives from scratch.
Below is one of the videos currently available on this channel.
-- Information is current as of May 16, 2019
Roku Channel Store Description: Wonders of Science features fascinating mysteries, STEM education and extreme world disasters, earthquakes, volcanic eruptions, landslides, tsunamis and other natural disasters.
CHANNEL STORE CATEGORY: Sci & Tech
DEVELOPER: Glewed TV