Many companies big and small don’t have and usually don’t need the in-house talent, knowledge, and resources to solve some of their problems.
A website where companies can publish the problem they need to solve, and a prize for the first person or team that solves the problem. Anyone alone or as a team can apply and try solving the problem for the award.
It would be interesting and educational.
A website that lists and explains current knowledge on all unsolved scientific problems and mysteries.