Cut-away diagram of a water-rich sub-Neptune exo-planet highlighting, in orange color, the interaction region between a deep H2O layer and the underlying rocky mantle. Credit: S. Speziale/ GFZ Deep Oceans Dissolve the Rocky Shell of Water-Ice Planets What is happening deep beneath the surface of ice planets? Is there liquid […]

Ancient kauri tree log from Ngawha, New Zealand. Credit: Nelson Parker Radiocarbon measurements on the remains of 42,000-year-old New Zealand kauri trees provide the basis for better calibration of geological archives of this period. The last complete reversal of the Earth’s magnetic field, the so-called Laschamps event, took place 42,000 […]