Popular Science L8 - 5Popular Science L8 - 5thumb_upthumb_downPopular Science L8 - 5January 1, 1948Louise the Beachcomber - a Beach Cleaning Machine; Synthetic Gem Manufacturing; Aviation School for Kids; Florida Seaweed Research and Harvesting.US Last Updated: November 12, 2025 Request Update CastGayne WhitmanNarrator