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Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
A series of two PET scans. A scan was done when the volunteer’s eyes were either open (left) or ...
Deep Pelagic Zone: Giant siphonophore
Remains of an abscission zone between a leaf petiole and twig of horse chestnut (Aesculus hippocasta