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Two researchers in blue coats and safety glasses look at an experimental setup. An oil pump jack situated in a grassy field with a few bare trees. Elemental mapping of Pd/COF confirming uniform Pd distribution. Aerial view of a winding river snaking through a green landscape. Meteors from the Geminid meteor shower streak across the sky above the Nicholas U. Mayall 4-meter telescope at Kitt Peak National Observatory (KPNO). Graphic illustration of molecules floating with cinema tape against a dark background. 2 rows of 3 scanning tunnel microscope images showing purple shapes against a dark background. Young plants lined up in a row in a petri dish, ranging from green to red hues. Container ship under Golden Gate Bridge in San Francisco. A rendering in paraview of the product of the 3D reconstruction. (Credit: David Raftrey) Gray particles of various sizes against a dark background, imaged here by a scanning electron microscope. Portrait of Peter Fischer, a person with short brown gray hair wearing glasses and a dark top, photographed against a gray backdrop.