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Cake day: 2023年6月29日

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  • 2022 Rogers Communications outage

    Date: July 8, 2022 @ 4:30 a.m. (EDT)

    Duration: 15 hours to several days

    Outcome: Disruption of internet and wireless phone service Government services disrupted 9-1-1 calls failing Nationwide loss of Interac debit services

    The event spurred new government policies requiring all telecommunications providers to provide mutual assistance to each other in the event of an outage, offer emergency roaming service for rivals’ affected customers, and establish plans for how to communicate to the public about outages.

    The outage was later said to be caused by a maintenance upgrade that caused routers to malfunction. A similar outage occurred in April 2021, which was attributed to a software update.









  • I asked chatGPT how stem cells are collected:

    From embryos: In the very early stages of development (usually from leftover embryos from fertility treatments), stem cells can be extracted. These are called embryonic stem cells and have the potential to turn into any cell type in the body.

    From adult tissues: Adults have stem cells in certain parts of their bodies, like the bone marrow, fat tissue, and blood. These are called adult stem cells and can usually turn into a few specific cell types (not as flexible as embryonic ones).

    From umbilical cord blood: After a baby is born, the blood from the umbilical cord and placenta is rich in stem cells. These cells are collected and can be stored for future medical use.

    Induced pluripotent stem cells (iPSCs): Scientists can take regular cells from the body, like skin cells, and reprogram them in a lab to behave like stem cells. These lab-created stem cells can act like embryonic stem cells and turn into many different types of cells.

    TIL