「BC」（Before Christ）代表主前，又可譯作公元前，而「AD」（Anno Domini）則表示主降生之後，即公元。 不過，澳洲當局決定推行一項前所未有的變革，抹除日期中的宗教色彩，分別以「BCE」和「CE」取代。

Rossella Tercatin is The Times of Israel's archaeology and religions reporter. Some 2,600 years ago, soldiers stationed at a modest military outpost on the southern border of the Kingdom of Judah ...

Although the Greeks and Romans linked environmental harm with climate change to a more limited extent than we do today, they ...

The astronomical clock in the Strasbourg cathedral in eastern France, including a perpetual calendar, an orrery, a display of the positions of the sun and the moon, and solar and lunar eclipses dates.