NOVELTY - Atmospheric remediation involves providing biological growth medium; forming into preformed, gel-like sheets (2); transporting to location over a body of water; distributing sheets onto surface of body of water; and growing carbon dioxide absorbing microalgae on sheets. The method includes heating medium to liquid state and cooling medium, prior to forming into sheets; adding microalgae growth (34) element to medium prior to forming medium into sheets; retrieving sheets and separating microalgae from sheets; and providing boundary booming (20) to maintain sheets in designated boomed area.    USE - As atmospheric remediation process (claimed) for removal of greenhouse gas, and carbon dioxide; and also for producing biomass such as algae biomass used for biodiesel production technology.    ADVANTAGE - The method uses preformed gel-like agar sheets or equivalent biological growth medium, composed to selectively enhance the growth of microalgae in defined environmental conditions. As agar sheets float, they remains at the surface thereby facilitating monitoring and mechanical control of the resulting biomass. The method is efficient, effective and does not require the intensive use of expensive ships fitted with specialized equipments. The raw material used in the method is cost free except for seeding, conveying and harvesting expenses; is neither complex nor labor intensive; and is economical.    DETAILED DESCRIPTION - A method of atmospheric remediation involves providing a biological growth medium; forming the biological growth medium into preformed, gel-like sheets (2); transporting the sheets to a location over a body of water; distributing the sheets onto the surface of the body of water; and growing carbon dioxide absorbing microalgae on the sheets. The method involves heating the biological growth medium to a liquid state and then cooling the biological growth medium, prior to forming the biological growth medium into preformed gel-like sheets; adding at least one microalgae growth (34) element to the biological growth medium prior to forming the biological growth medium into preformed gel-like sheets; retrieving the preformed sheets and separating the microalgae from the sheets; returning the preformed sheets to a location over a body of water; and using the microalgae grown on and separated from the preformed sheets for the production of biofuel. The body of water location is a nutrient rich area. The biological growth medium comprises agar. The method further involves adding multiple microalgae growth elements to the biological growth medium, where the microalgae growth element comprises iron; and providing boundary booming (20) to maintain the preformed sheets in a designated boomed area. The sheets are transported to the body of water location by a marine vessel. An INDEPENDENT CLAIM is included for an atmospheric remediation system comprising either preformed, gel-like sheet units containing a biological growth medium and at least one microalgae growth element for stimulating microalgae growth on the sheet units; transportation device for conveying the preformed sheet units to designated locations over a body of water; and distribution device for positioning the preformed sheet units onto the surface of the body of water locations, so that placement of the sheet units on the surface of the body of water locations causes microalgae growth on the preformed sheet units; or several preformed, gel-like sheets; a marine vessel for conveying the preformed sheets to designated locations over a body of water; and units on the marine vessel for dispensing the preformed sheets onto the surface of the body of water in a predetermined pattern to promote microalgae growth on the preformed sheets. The atmospheric remediation system further comprises container unit for the storage and ejection of the sheet units from the transportation units; and boundary booming for maintaining the sheet units in designated areas in the body of water locations.    DESCRIPTION OF DRAWING(S) - The figure shows overhead view of agar sheet field, several days after deployment of the sheets.    Agar preform sheets (2)    Boundary containment booms (20)    Microalgae growth. (34)