Laboratory at EPA's Las Vegas National Research Center technician holds up an air filter, May 1972. Photographer: O'Rear… https://www.rawpixel.com/image/8770691/photo-image-person-human-finger Free Image from public domain license
From red meat to ash--a four week laboratory procedure for measuring gamma radiation at EPA's Las Vegas National Research… https://www.rawpixel.com/image/8770689/photo-image-burger-person-red Free Image from public domain license
Carnivorous pitcher plants are displayed at the U.S. Department of Agriculture’s (USDA) Pollinator Week Festival at USDA’s… https://www.rawpixel.com/image/3261199/free-photo-image-iris-flower-agriculture-environmental-protectio-protection-agency-epa-national-park-service-nps Free Image from public domain license
Ph.D. student researcher Junpyo (Patrick) Kwon demonstrates the technique in making a biodegradable printed circuit at… https://www.rawpixel.com/image/11072992/photo-image-face-hand-person Free Image from public domain license
Researchers, such as this man in the Centers for Disease Control and Prevention's new maximum containment virology… https://www.rawpixel.com/image/8764864/photo-image-person-table-food Free Image from public domain license
Exhibit at the First Symposium on Low Pollution Power Systems Development Held at the Marriott Motor Inn, Ann Arbor Vehicles… https://www.rawpixel.com/image/8770759/photo-image-flower-plant-wood Free Image from public domain license
Lasioglossum paraforbesii, F, face, Pennington Co., S. DakotaFrom the Badlands of South Dakota...Lasioglossum paraforbesii. https://www.rawpixel.com/image/8756705/photo-image-public-domain-bee-animal Free Image from public domain license