A Strange Testament to an Ancient Earth: Bat Breath Causes Caves to Grow Larger


The formation and development of caves is called speleogenesis.  Everyone knows that caves typically form via the dissolving of limestone to form voids in the rock.  Usually this begins deep underground and as the void expand and reach the surface animals may enter and occupy the cave.  But what happens to caves when the water source that has […]

Bones of Contention III: ICR Claims Homo naledi Fossils are of an “Imaginary Creature”


Soon after the revelation that the remains of at least 15 individuals had been found in the deep recesses of a cave and that these bones looked as if they had been deposited there purposely, I asked the question: How Will Creationist’s Respond to a Huge New Hominid Fossil Find?  The first responses came within […]

Diatoms: Tiny Organisms Highlight Big Inconsistencies in Young Earth Flood Geology Models


I am frequently struck, while reading literature by young earth creationists, by how often authors seeking to resolve one problem are unaware of how many new problems their explanations create. Yesterday I came across an article by Dr. Snelling of Answers in Genesis in which he discusses his YEC explanation for the origin of oil and coal.  In this case the […]

NH Notes: Fossilized Animal Burrows in Argentina from the Triassic Period

This is a photograph of a typical burrow complex found in Triassic formations in Argentinia.  The scale bar in the pictures is 10 centimeters.  Horizontal shafts are labeled "A" and vertical shafts that continued doen into rock below or would have gone up to the surface are labeled "B". This is Fig 3 from: Colombi CE, Fernández E, Currie BS, Alcober OA, et al. (2012) Large-Diameter Burrows of the Triassic Ischigualasto Basin, NW Argentina: Paleoecological and Paleoenvironmental Implications. PLoS ONE 7(12): e50662. doi:10.1371/journal.pone.0050662

Fossilized bones of dinosaurs, whales and mammoths get all of the attention but trace fossils provide important evidence for interpreting when and how organisms lived on Earth in the past. Trace fossils are not the fossilized remains of organisms themselves but rather are evidence of the past presence of organisms.  The most recognizable trace fossils […]

Local Catastrophes Happen: Mega-Tsunami Moves 700-Ton Boulders Uphill

The tsunami generated by Fogo's collapse apparently swept boulders like this one from the shoreline up into the highlands of Santiago island. Here, a researcher chisels out a sample.  Image credit: Ricardo Ramal

A volcano slides into the sea causing an 800 foot wave to crash onto into an adjacent island. That wave picks up 700-ton boulders and throws them uphill leaving them stranded far above their source.   It sounds like a plot from a Hollywood movie but this is real.  It happened in the Cape Verde Islands off of […]

Dogmatic Assertions of Expertise: Having Faith in Flood Geology

In Badlands National Park in South Dakota, August 2013. Photo by Joel Duff

Everyone is an expert in something but they can’t be an expert in everything.  At some point we all have to rely on the expertise of others to guide us through our lives.  I am a biologist, however, the vastness of the field of biology leaves me in the position of deferring to the knowledge of […]

Can You Spot the Difference? The Slowly Changing Surface of Mars

The restaurant kids meal activity "spot the differences"  has many android app versions now including this one by ??.   I expect it would take a keen eye to notice the difference in a 6000 year old photograph of Mars and one taken today.

Below is a picture taken by the Curiosity Rover on Mars last week.  Had you been on Mars 6000 years ago at this very location what do you think it would have seen?  What differences do yo think you could spot between then and now? I have zoomed in on one section of this rock […]

Is Historical Science Reliable? An Exploration of the AiG “Origins” Science Label


Young earth creationists frequently speak of two kinds of science which they refer to as “origins” and “operational” science.  These terms are possibly akin to what scientists may call “historical” and “experimental” science.  What is this “origins” science and how does origins science play a role in the discussion of the Age of the Earth? […]

Curiosity Rover Update: Diverse Geological Formations on Mars


The Mars Curiosity Rover continues to make its way through the basin of Gale Crater on Mars.  I’ve provided periodical updates on its progress as it makes its way toward a large mountain in the center of the crater.  For the past six months the rover has not moved much, spending its days using the […]

Origins of a Tropical Island II: The Long Road from Lava to Colonization

The new volcano (black material) is taking over the old island (green and yellow portion of the island).

Imagine a tropic island paradise with beautiful beaches and thousands of plants and birds. Chances are you are imagining an island that formed as the result of volcanic activity. Examples would include the Caribbean islands, the Polynesian islands, and the Hawaiian Islands. But imagine what those islands looked like when they first formed. Rather than […]


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