Can scientists bring back an extinct dinosaur? Way back in 1990, a novel by Michael Crichton and subsequent movie by the same name, Jurassic Park, in 1993 used futuristic genomic biology to suggest how we might de-extinct the dinosaurs. Could we really retrieve dinosaur DNA from preserved dinosaur blood sucked up by an ancient mosquito and... Continue Reading →
We use present day observations to infer past events every day. I look out and see the patio is wet and a large dark cloud has just passed overhead. From this I derive a very reasonable hypothesis despite not being an eyewitness to the history: my wet patio was caused by a rain shower. I... Continue Reading →
So how long can DNA or even cells survive in the environment once an organism dies? This has been a topic of considerable debate in the scientific literature since the advent of high-throughput DNA sequencing techniques. This growing field of scientific inquiry is fascinating to me and promises to shed new light on old questions. I have... Continue Reading →
Are the existence of plant thorns and thistles proof that the world can only be a few thousand years old? Yes! according to most young-earth creationists. I've written several times about thorns and creation (eg. The Prelapsarian Acacia and the Good Creation: On the Origin of Thorns) but a video available at creationtoday.org - a small fringe young-earth... Continue Reading →
Ecology is the branch of biology that studies the interactions of organisms with each other and their environment. The animals and plants around you are living in relationship with each other and the environment, including yourself. Around your home you may have considerable control over the environment - moisture, nutrients, lawn-mowing, week control, pest removal - and thus you are probably... Continue Reading →
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... Continue Reading →
My daughter is very attentive to the insect population around our house. She spends many hours collecting all sorts of insects and other animals. In the fall of 2013 she brought me a leaf that she thought had a caterpillar of some sort on it. She is well aware that bugs make little... Continue Reading →
Diatoms are single-celled organisms that live in almost any moist environment. They are found by the millions in a cup of sea water or a puddle in your back yard. They play a critical role in the environment as oxygen producers. But they are best known for their visually stunning homes constructed of glass. I... Continue Reading →
While writing about the origins of the Dead Sea and Jordan Valley I was confronted once again with one of the most striking pieces of evidence for an ancient earth that I am aware of. Take a look at the figure below. This figure shows the smoking gun. Smoking gun evidence of what? That the earth's plates... Continue Reading →
Does fossilization require rapid burial as the result of catastrophic global flooding? Literalist creationists would have us believe so for they point to the fossil record as being proof of a cataclysmic global flood. Look a bit deeper though and you will find that creationists frequently concede there are thousands of exceptions to this general... Continue Reading →
Are plants alive? Ken Ham seems to think so since he refers to “animal or plant life in outer space.” But what does he mean by alive? I think he has only a secular scientific definition of life in mind when he makes these statements. I wonder if he even knows that his own website... Continue Reading →
Ken Ham recently proclaimed that he thought it was highly unlikely that “plant life” would be found on other planets. I wonder what he thinks the word “life” means in this context? For example, does living mean that plants also experience death? If so, how can he say that animals and man were allowed to... Continue Reading →
Can you imagine the world’s oceans filled with carnivorous reptiles? Dinosaurs are the most famous members of the age of the reptiles. However, many of the original reptilian fossil discoveries that initiated the idea of the age of reptiles were not dinosaurs. They were instead reptiles that lived in the sea.
Yesterday I introduced the main character to this drama of the hunt for the elusive bird leptin. Now its time to introduce the other players and get on with recounting how the discovery of the bird leptin gene was made. Several years ago I began collaborating with Dr. Rich Londraville (UA Biology) on a project involving the... Continue Reading →
Last week the headlines read “elusive bird hormone found” and “discovery of the elusive leptin in birds.” It has been great to see so much interest in research I have been involved with for several years, but our paper (Reference 1) and the press blurbs associated with it only tell a small part of the... Continue Reading →
Naturalis Historia 