; (B) potential market prices for livestock feed containing seaweed additives; and (C) the potential role of greenhouse gas emission credits in supporting the reduction of enteric methane using seaweed. (d) Requirements In providing grants under subsection (b), the Secretary shall— (1) select recipients on the basis of the quality of the proposed research project; and (2) award not less than 50 percent of funding to eligible entities in States that, as determined by the Secretary, are among the States with the greatest length of coastline. (e) Authorization of appropriations There are authorized to be appropriated such sums as are necessary to carry out this section for each of fiscal years 2024 through 2028. . 503. Urban, indoor, and other emerging agricultural production research, education, and extension initiative Section 1672E of the Food, Agriculture, Conservation, and Trade Act of 1990 ( 7 U.S.C. 5925g ) is amended— (1) in subsection (a)— (A) in paragraph (5), by striking production; and inserting production or preservation; ; and (B) in paragraph (6), by inserting , including those in circumpolar regions before the semicolon; and (2) in subsection (c)— (A) in paragraph (1), by striking or at the end; (B) in paragraph (2), by striking the period at the end and inserting ; or ; and (C) by adding at the end the following: (3) areas designated as frontier or remote areas. . 504. Reports and regulations on coastal seaweed farming (a) Definitions In this section: (1) Coastal seaweed farming The term coastal seaweed farming means the onshore or nearshore propagation and harvesting of seaweed and products derived from seaweed that— (A) does not use any— (i) synthetic pesticide (as defined in section 2 of the Federal Insecticide, Fungicide, and Rodenticide Act ( 7 U.S.C. 136 )); or (ii) plastic, unless a suitable replacement does not exist