“Coyotes, like humans, are unusually adaptable to their environments, which is why they have been making homes in urban places, like you see here. Unlike most other wild predators in the U.S., their populations have continued to thrive: where they had once been limited to the southwest and prairies of North America, they are now […]
Adaptability of Coyotes Read More »
A trip to the Bisti Badlands (aka “De-Na-Zin Wilderness”) is a trip to an alien world, where it’s easier to imagine the eons of time past. Badlands are landscapes in which vast amounts of clay soils and sedimentary rock have eroded, leaving scant vegetation, and often leave behind unusual rock formations from the denser minerals
Here I am, situating myself in “giant sloth” position like my fossil friend here, a _Megalonyx jeffersonii_ knicknamed Sid. Dating from the Cenazoic Era’s Pleistocene Epoch (2.5 million – 12,000 years ago), this giant sloth was 9 feet 8 inches high (about 3 meters), making him “only” medium-height among the giant ground sloths. This exquisite
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Here’s a story about human evolution, and about how different human species have given us genes that allowed us to thrive in particular conditions.The study of ancient DNA has allowed scientists to figure out that two different human species that co-existed with Homo Sapiens interbread with us and passed along some of their genetic material.
This is a tale of two skeeters: perhaps the two most infamous individuals discovered to date. This predator surpasses peskiness – historian Timothy Winegard gives a ballpark statistic that mosquitoes have caused the deaths of 52 billion people, making them humanity’s most lethal killers by a very long shot.The first featured fiend is from 130
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In the north-central region of Maryland, the Catoctin Park has some of the oldest layers of the earth’s exposed mountains. The Appalachians rose out of a collision between plates in North America and Africa 200 million years ago, and parts of the convergence appear here, where the quartzite rocks you see are part of a
Maryland’s Catoctin Park and the Convergence Read More »
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
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This sweet painting by Ferdinand Georg Waldmüller from 1854 is called _Grandmother with Three Grandchildren_. In it , three cheery young girls surround a seated older woman, eyes gazing on some scrap of paper she is holding. All four females are comfortable with each other, and wear relaxed and happy expressions. The image of
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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
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
Appearances of Homo Sapiens Read More »
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
