Mercury rising: Planet completes rare transit of sun

May 10, 2016

Mercury rising: Planet completes rare transit of sun

Astronomers celebrated Monday witnessing one of the highlights of the skywatchers’ year, when the sun, Mercury and Earth all lined up — a phenomenon that happens just a dozen or so times per century. Mercury was seen through telescopes as a black dot inching ...

Feb 3, 2016

Japan joins Minamata convention against mercury pollution

Japan on Tuesday became the 23rd country to join the Minamata Convention on Mercury, an international pollution treaty on the toxic metal that requires approval by 50 countries for it to take effect. The convention describes mercury as “a chemical of global concern.” It ...