Italy has long been a focal point for the field of volcanology, thanks to many notable sites such as Vesuvius, Etna, Stromboli, and Vulcano. Join volcanologist Kirt Kempter for an exploration of the country’s volcanic past, present, and future.
Andrew H. Knoll, a professor of natural history and earth and planetary sciences at Harvard University, discusses the five moments over the past 500 million years when most of Earth’s animal species disappeared, how those past events relate to 21st-century global change, and what lessons may be learned for preserving our planet’s precious and precarious biodiversity for future generations.
Who knew that beneath our feet is evidence of magma chambers, giant sharks, Himalayan-sized mountains, and the breakup of several supercontinents? Geologist Callan Bentley leads a fascinating exploration of the Mid-Atlantic region that explores an extraordinary history spanning more than a billion years of geologic time.
The race to remotely detect the first sign of alien life is gaining speed as technology starts to catch up to humanity’s imagination. Yet what evidence of “life”’ are we looking for? Louisa Preston of the Mullard Space Science Laboratory at University College London explores the question through the study of terrestrial biology and geology and considers predictions as to what extraterrestrial life might be like and how it might be found.