- Laurentide Ice Sheet (Wikipedia)
The Laurentide Ice Sheet was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glacial epochs, from 2.58 million years ago to the present.
- Atria (stars.astro.illinois.edu)
ATRIA (Alpha Trianguli Australis). Among the easiest constellations to invent are simple triangles. There are two of them, one north (Triangulum) and one far south (Triangulum Australe). Of the two, the latter is the larger and brighter, its Alpha star (from which we get the modern proper name, “Atria”) a nice bright second magnitude (1.92), ranking 41st.
