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Southern Africa is typically considered to belong to a single tectonic plate, Nubia, despite active faulting along the southwestern branch of the East African Rift System. We analyze regional Global Navigation Satellite System (GNSS) measurements, and find that the “San” microplate, situated south of the southwestern branch of the East African Rift, is statistically distinct from Nubia, with 0.4–0.7 mm/yr of extension across the boundary. Adding nine new campaign GNSS sites, we show that the extension rate across the southern Malawi Rift is 2.2 ± 0.3 mm/yr, with 75% of the relative velocity occurring over 890 km, despite the surface expression of faulting being

The 2019 Ridgecrest earthquakes pose interesting questions about the nature of intersecting conjugate ruptures, and also the possibility of re-rupture of fault segments. Aftershocks of the July 4th...

A patient with a potassium wasting nephropathy secondary to chemotherapy simulating Bartter's syndrome is described. A 64-year-old woman with diffuse histiocytic lymphoma developed persistent hypokalemia following a course of Cytoxan (cyclophosphamide), Adriamycin (doxorubicin), vincristine, and prednisone (CHOP)-Bleo. The diagnosis of a functional Bartter's syndrome was concluded following evaluation of serial plasma renins, aldosterone levels, and urinary electrolytes. Evidence is suggestive that a subpopulation of patients receiving chemotherapy may develop a functional Bartter's syndrome, and it is important to consider this diagnosis in patients who develop hypokalemia subsequent to chemotherapy introduction.