Messinian Salinity Crisis

Book review – When the Sahara Was Green: How Our Greatest Desert Came to Be

7-minute read

When seeing the world through a deep-time lens, no landscape feature is permanent. The Sahara, for example, “only” came into existence some 7 million years ago. In that time, it has not always been the parched desert it is now but has been green and verdant numerous times, crisscrossed by rivers and home to hippos, turtles, fish and other animals and plants typical of wetter climes. In this book, retired earth scientist Martin Williams draws on a long lifetime of research and desert expeditions to give a very accessible introduction to the surprisingly complex geography of the Sahara, answering some very basic questions.

When the Sahara Was Green (more…)

Book review – Otherlands: A World in the Making

7-minute read

Our planet has been many different worlds over its 4.5-billion-year history. Imagining what they were like is hard—with our limited lifespan, deep time eludes us by its very nature. Otherlands, the debut of Scottish palaeontologist Thomas Halliday, presents you with a series of past worlds. Though this is a non-fiction book thoroughly grounded in fact, it is the quality of the narrative that stands out. Beyond imaginative metaphors to describe extinct lifeforms, some of his reflections on deep time, taxonomy, and evolution are simply spine-tingling.

Otherlands (more…)

Book review – Worlds in Shadow: Submerged Lands in Science, Memory and Myth

7-minute read

Long before we developed writing, humans communicated information across generations by telling stories. Professor of Oceanic Geoscience Patrick Nunn contends that some of these record actual environmental changes that impacted our ancestors. Scientists interested in the rather obscure discipline of geomythology argue that, when studied carefully, such oral histories can be an additional source of data to help us reconstruct past climates and understand their impact. Supremely absorbing, Worlds in Shadow covers a wider range of topics than Nunn’s previous books, making this of interest to a broader audience.

Worlds in Shadow (more…)

Book review – Ocean Worlds: The Story of Seas on Earth and Other Planets

7-minute read

Life most likely originated in the oceans, and it is to oceans that astronomers are looking to find life elsewhere in the universe. With the publication last year of Kevin Peter Hand’s Alien Oceans, I decided this was the right time to finally review Ocean Worlds, a book that I have been very keen to read ever since buying it some years ago. This, then, is the first of a two-part dive into the story of oceans on Earth and elsewhere.

Ocean Worlds slanted (more…)

Book review – Ancient Bones: Unearthing the Astonishing New Story of How We Became Human

7-minute read

Where do humanity’s evolutionary roots lie? The answer has long been “in Africa”, but this idea is being challenged from various sides. I previously reviewed Begun’s The Real Planet of the Apes as a warming-up exercise before delving into this book. My conclusion was that its discussion of archaic ape evolution, although proposing that species moved back and forth between Africa and Eurasia, ultimately did not really challenge the Out of Africa hypothesis. Not so Ancient Bones. German palaeontologist Madeleine Böhme, With the help of two co-authors, journalists Rüdiger Braun and Florian Breier, firmly challenges the established narrative in an intriguing book that is as outspoken as it is readable.

Ancient Bones (more…)