Elissa Esteban-Flores lights a candle before the start of the Rorate Caeli Mass, a “forgotten Advent tradition” that honors the Virgin Mary, at Our Lady of Grace Catholic Church in Encino, Calif. These masses, usually celebrated a few days before Christmas, are characterized by being illuminated only by candlelight, celebrated in the dark and are accompanied by Gregorian chants and sacred music.

The floor of the greenhouse is flooded to water cannabis plants at Glass House Brands near Camarillo, California. The 5.5 million square foot facility is expected to become the world’s largest for growing cannabis once it’s fully converted from its original use as a high-tech tomato farm.

A visitor walks through Color Wheel a glowing architectural structure that visitors are invited to enter, by artist Brian Zamora at the Sculpted Light exhibit at the Luckman Gallery at Cal State LA.. They are immersed in a spectrum of hues that shift and blend, revealing the complex relationships between colors.

A rare Southern California lightning storm, Griffith Park, Los Angeles.