The lunar crater you see here is Aristarchus, and we’re not going to be be able to get any closer than that to an accurate portrait of the eponymous Ancient Greek astronomer because most of his writings — as well as any contemporary sculpture or paintings of the man — are lost to the sands […]
Aristarchus’s Model of the Universe Read More »
66 million years ago, there was a Very Bad Day for nearly everyone on the planet. That’s when the asteroid responsible for ending the age of the dinosaurs crashed into the Yucatan Peninsula and destroyed about 78% of all species.This picture from Trinidad Lake State Park in Colorado shows one of the places where the
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We all know (some of us might still be sad about it) that Pluto was demoted to a “dwarf-planet” status back in 2006. In other news, however (and mayhaps this could make up for Pluto’s decline), some scientists have speculated that another planet — known as Planet Nine — might be orbiting our sun.Ideas about
This is “Arctium lappa,” aka burdock. Originally from Eurasia, it is now an invasive species in North America — this beautiful specimen was flowering yesterday in the Shenandoah National Park, and July and August are typical months when the spiny bulbs blossom in lavender and purple. Although burdock root has long been used in cuisines
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We hairless humans have been wearing clothing for a long, long time, but exactly when is hard to tell — paintings, statues, or fabrics that give evidence of our garb only appear long after scientists think we started dressing. A paper published by Toups et al. in the journal _Molecular Biology and Evolution_ in 2011
Dzudzuana Cave, human fabric, and skin lice Read More »
These rocks from the northern shore of Lake Superior are from the dullest period in our planet’s history, apparently. Most of us humans of the early twenty-first millennium do not do well with being bored. Imagine, then, one billion years of it. From 1.8 to 800 million years ago, Earth’s life forms remained relatively
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Yesterday I did a post about the “boring billion”: a period of Earth’s history when very little changed. Today I offer the exact opposite, which is the most exciting two minutes in all of existence. And those in fact were the first two minutes of everything, at the start of the Big Bang. We
The root system you see here isn’t just part of the plant: it’s joined by fungi, making it a mycorrhiza — a symbiosis of plant and fungi. Most plants rely on mycorrhizae — the fungi elements give the roots better access to precious nutrients like phosphorous and water, and the plant bits give the fungus
Mycorrhiza: Symbiosis of Plant and Fungi Read More »
TIL that 30 million years ago a species of mound-building termites evolved with next-level techniques that we humans could learn from in order to deal with our environmental challenges. These are the Macrotermes, and what makes them particularly special is the very ancient relationship they co-created with the fungus Termitomyces. Neither survives without the
Termites and Mushrooms: A Quid Pro Quo Read More »
To the northwest of the Fertile Crescent of ancient Mesopotamia, in the southeast of modern Turkey, lie the ruins of one of the most important archaeological sites in human history: the stone monuments of Göbekli Tepe. Only discovered in the 1990s (earlier archaeologists has thought the remains medieval), Göbekli Tepe sprawls over twenty acres
This skeleton is a photo montage of a very decorated burial. The man was between 35-45 years old when he died, but his remains date back to about 34,000 years ago — one of the earliest human interments in the historical record. This man’s grave, found in the region of Sunghir, Russia, reflects a vastly
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I love how scientific technologies are helping us understand the earliest millennia of human history ever better. This drawing, for instance, features an artistic re-creation of skull fragments dated in 2017 that have helped to overturn our understanding of human evolution. Basic questions, such as “how long have Homo Sapiens been around?” And “where
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This is a drawing of the prehistoric species Plesiosaurus, discovered by the paleontologist Mary Anning in 1823. Anning was a working-class, uneducated person who became one of England’s premier fossil scholars, but struggled her whole life — financially and professionally — because of her gender and class. Anning grew up on the southern coast
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This lovely creature was a Dinogorgon, one of many types of animals known as “Gorgonopsia,” the apex predators in the Permian Period. When I learned about how boss these creatures were, the nine-year-old paleontologist in me felt cheated because of all the front stage play that dinosaurs get. But these animals were amazing and thrived
This is a set of bone sewing needles found in the Cave of Courbet near Toulouse, France, dating to around 13,000 years ago. Trace the history of the sewing needle and you will trace one of the key technologies that enabled Homo sapiens to migrate around the planet, and to outlast our closest human relatives,
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The Ancient Greeks were right to have the story of how Prometheus brought fire to the human race front-and-center in their mythology. Fire is an amazing thing — most vertebrates flee from it when it happens in the natural world. But we humans learned to control it, and that revolutionized our existence. The control of
Fire and Evolution Read More »
I’ve done loads of posts on human cannibalism, which might bring about some self-disgust for our species. Would it cheer you up to know, then, that it’s not just us moderns who’ve a legacy of eating each other?. Turns out, humans have a very long history of self-consumption, stemming back a million years to the
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This is a mouflon, a type of mostly wild sheep that is a likely ancestor of all the domesticated sheep on earth today. Even if most of our clothing isn’t made of wool and most of our food isn’t lamb, human life wouldn’t be the same without this animal. Sheep and goats were the first
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In the US, Mother’s Day is this Sunday, so I thought it appropriate to introduce this fine specimen, representative of what many Paleo-anthropologists consider the earliest known mother of all hominids (including us Homo sapiens). This is the Ardipithecus ramidus, and she lived about 4.4 million years ago in what is now modern Ethiopia. Her
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The Luray Caverns in northern Virginia are one of the most touristed cave systems in the world, drawing about a half a million people a year. They are adorned with striking rock formations of stalagmites, stalactites, and columns, all made from white calcium carbonate, red-toned iron oxide, and grey magnesium oxide. These permeate the limestone
Luray Caverns of northern Virginia Read More »
