https://www.hertzfoundation.org/the-fellowship/
Deadline: Late October
Eligibility: U.S. citizens or permanent residents applying to or enrolled in the first year of PhD programs in physical and biological sciences, mathematics and engineering.
Description: The Hertz Graduate Fellowship Award is awarded to students based on merit. Any student who accepts the fellowship makes a moral commitment to make his or her "skills available to the United States in times of national emergency." Benefits include a stipend in the amount of $32,000 to $38,000, as well as networking through retreats and workshops.