Mohamed Athman, 28, arranges sea shells at his stall near Mama Ngina Drive in Mombasa County on April 05 2016. Athman who gets his cowrie shells from South Coast areas of Vanga and Shimoni in Kwale ...

ABSTRACT We present an analysis of AAVSO visual observations of the Mira variable R Cen from 1918 to 2000. The period of the dominant mode has been steadily decreasing from 550 days at JD 2,434,000 ...

Stephen Durham (left) and his father, Michael Durham, gather shells from Fence Creek in Madison, Connecticut. Courtesy Hakai/Geoff Giller This article is from Hakai Magazine, an online publication ...