- Luiz Inácio Lula da Silva, known as Lula, took office as president on January 1, 2023. Seven days later, supporters of defeated candidate and former President Jair Bolsonaro stormed Congress, the Supreme Court, and the presidential palace, unsuccessfully calling for a military coup.
- Onyx (Wikipedia)
Onyx is the parallel-banded variety of chalcedony, a silicate mineral. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands. Onyx has parallel bands, while agate has curved bands. The colors of its bands range from black to almost every color. Specimens of onyx commonly contain bands of black or white or both. Onyx, as a descriptive term, has also been applied to parallel-banded varieties of alabaster, marble, calcite, obsidian, and opal, and misleadingly to materials with contorted banding, such as “cave onyx” and “Mexican onyx”.