This illustration provided by Nikola Nevenov in January 2023 depicts a priest during an embalming process in an underground chamber in Saqqara, Egypt. For thousands of years, ancient Egyptians mummified their dead to help them reach eternal life. According to studypublished Wednesday, Feb. 1, 2023, in the journal Nature, researchers have used chemistry and an unusual collection of jars to figure out how they did it. (Nikola Nevenov via AP)