To use an image from a scientific paper in your educational YouTube video, you need to ensure you have permission. First, check if the image is under a Creative Commons license, which allows for reuse with proper attribution. If not, you should contact the publisher or author for permission. When you use the image, include a citation in your video description and on the image itself, mentioning the source, author, and publication. This way, you respect copyright laws and give proper credit to the original creators.