Hi Julie,
We apologize for the outdated links! The NCBI seems to have really revamped its platform. I will inform sciencebuddies about the new updates. Now, from this point on, I can think of two possible ways to get around this.
WAY 1: Similar to what Elizabeth mentioned, there is another very similar and up-to-date science project that your son could do as an alternative using
http://www.genomesize.com. I actually did this new project a few years back when I was first learning about genetics. I found my results pretty mind blowing, I still do

.
Project:
https://www.sciencebuddies.org/science- ... ml#summary
WAY 2: I would only do this choice if I were really keen on continuing with the same project. The bioproject organization run by the NCBI seems to have reorganized everything on its platform.
I couldn't seem to find a page offering the same simplistic vibe as before so to get around this I heavily personalized the search into this link:
https://gold.jgi.doe.gov/projects?page= ... sm.Domain=.
Instead of organizing projects into simple animal based categories, the projects are categorized by "Organism Domain". So, your son should still be able to tell which types of organisms need more attention in the sequencing world through the "project status" but the information he finds will probably be less recognizable and thus less exciting.
By Clicking the "+" under "Organism Domain" your search becomes customizable. The three organism domains available to search are "Archaeal", "Bacterial", and "Eukaryal".
To view simple pie charts displaying all of this data click this link:
https://gold.jgi.doe.gov/distribution. There are multiple tabs in blue on top of the pie charts. Click the "sequencing status" tab to see the information your project is related to.
I really suggest going with WAY 1 because it is simple, really quick, and may help replace any frustration with fascination and excitement. It's a really great project.
Best of luck! If you have any more questions, we're happy to help!