Solution to each problem facing humanity is around us but requires individuals to focus full attention towards solving the problem. to locate a answer, its essential to have a personal interest and drive towards the topic. Only passion towards the problem renters human minds to find a solution.
We are human, over time we will solve all problems humanity faces.
Told us what we've all always known. The speed is restricted by how effectively liquid can flow passed the bubble in a narrow gap. How isn't this known science?