And hopefully it will now move fast to understand the impact of its own platform, circa fifteen years into its great 'society reshaping experience', and prevent Facebook from being repeatedly used to trash human rights.
Saruman, like Gandalf and Radagast the Brown, is one of five 'wizards', known as the Istari, who begin to arrive in Middle-earth circa two thousand years before the beginning of The Lord of the Rings.
The course will examine Jerusalem's changing architectural programme over circa thousand years, as well as its representation in images and texts from Jewish, Christian and Muslim sources.
The service interprets "circa" as five years either way, so "circa 1900" will not cut it, although "circa 1895" will.
In contrast to Wegener's thinking, however, geologists note that other Pangea-like supercontinents likely preceded Pangea, including Rodinia (circa 1 billion years ago) and Pannotia (circa 600 million years ago).
"The solenodon lineage diverged from other placental mammals circa 78 million years ago.
With regard to the origin of life, the geologic time scale throws us a lifeline: to claim that life "appeared" circa 3.7 billion years ago is hardly committing oneself to a discrete moment of transformation.
Some suggest that rabbit- or ungulate-like placental mammals existed early in the Cretaceous period, whereas other researchers push for a more recent origin, circa 65 million years ago--around the time when dinosaurs disappeared.
Many of the photosynthetic organisms that live in the oceans also produce calcium carbonate, and they may have begun doing so to protect themselves from ultraviolet radiation, says Reef. "Calcification began circa 600 million years ago, when UV levels were much higher than today".
An early close primate relative known from abundant remains is the Late Paleocene Plesiadapis, circa 55 58 million years old.
Productions of Macbeth began incorporating portions of Thomas Middleton's contemporaneous play, The Witch, circa 1618, two years after Shakespeare's death.
