If it's above $14,000 in a single year, the giver needs to disclose it to the IRS on their tax return for record keeping purposes, but it doesn't get taxed unless it's cumulatively above $5.49 million over the course of the giver's lifetime.
Person A can give persons C and D $14K each and that all falls under the annual exemption. Persons A and B can together give person C $28K and person D $28K and still be within the exemption (2 spouses giving to 2 kids is a common example).
Most grants today are "I want you to study X" not "Do something that's really worth the money" or "Build something that will genuenly help people or improve life for everyone".
Is that not a similar idea?
Just think about getting many people's lives moving?
I urge you to apply!