Researchers have confirmed the existence of a distinct structure inside our planet’s inner core, saying the newly discovered “innermost inner core” is a solid ball of iron and nickel about 800 miles wide that could help inform the evolution of Earth’s magnetic field. What do you think?
A study of two powerful earthquakes in adjacent areas off the Alaska Peninsula in 2020 and 2021 shows a connection between the two. It also suggests they may be a part of an 80-year rupture cascade along the fault.