What does it take to stay alive? On this ID the Future, host Eric Anderson concludes his conversation with physician Howard Glicksman about the remarkable systems in the human body that help control water and sodium to keep us alive. In Part 2, Dr. Glicksman discusses two more innovations that add a "push-pull" effect to the systems discussed in Part 1. First, a sensor in the heart kicks into action when water or sodium levels get too high. Second, an anti-diuretic system in the hypothalamus that detects cell shrinkage and promotes water retention. In true engineering fashion, these systems are interdependent and tightly integrated, working together in unison (along with your own active participation!) to safeguard your body and help you live your best life.
This is Part 2 of a two-part conversation. Read More ›
On their own, the laws of nature don't tend toward life. To stay alive, living things utilize ingenious solutions. On this ID the Future, host Eric Anderson talks with physician Howard Glicksman about another way that the human body counteracts the natural tendency of the laws of nature to destroy life.
Glicksman explains how the body controls water volume and sodium--two aspects that are absolutely critical to keeping us alive. It isn't just a single system. It's an interconnected and interdependent system of systems using a network of sensors, integrators, and effectors to maintain the life-giving balance of water and sodium in our bodies.
This is Part 1 of a two-part conversation. Read More ›
If Charles Darwin could have peered into one of today's high-powered microscopes and seen the stunning complexity and function in even the simplest living cells, On the Origin of Species might have been a very different book! On this ID The Future, we go behind the scenes with biochemist Michael Behe to discuss his popular video series Secrets of the Cell. From overseeing intricate animation work to driving off-road in a Jeep through the backwoods, Dr. Behe spills some secrets of his own about his experience getting in front of the camera to bring the wonders of the cell to life. Read More ›
A new study challenges decades of conventional wisdom on what caused the geologically sudden rise of multicellular life on earth. So what mechanism triggered the Avalon explosion and other similar infusions of new life? And is it a science stopper to use intelligence or mind as a working hypothesis? On this ID The Future, we welcome back paleoentemologist Dr. Günter Bechly to answer these questions and more.
A 1959 paper argued that an increase in oxygen content was a pre-condition for the rise of the first complex macro-organisms. This became mainstream consensus for decades. But a new study shows that this geologic event, known as the Avalon explosion, was actually precipitated by a drop in oxygen levels. Dr. Bechly explains the new paper's findings. He also explains the type of mechanism that has the power to produce the effects in question. Read More ›
The RNA world is proposed by some to explain how early life began before DNA. But is RNA capable of maintaining a life-friendly self-replication rate? On this ID The Future, host Andrew McDiarmid welcomes back Dr. Jonathan McLatchie to discuss another headache for the RNA world scenario. Before a trial and error process like natural selection can even get started, self-replicating molecules must have a minimal accuracy rate to copy genetic material effectively. The required fidelity rate is estimated to be 2%. Any error rate higher than that results in error catastrophe for organisms. The average error rate in RNA copying is estimated to be around 17%, vastly higher than the estimated maximum error threshold for survival. McLatchie explains the implications of this for chemical evolutionary theories like the RNA world hypothesis. He also explains how a Bayesian approach to this evidence can provide us with the likeliest explanation for the origin of biological life. "The sorts of features that we observe in life are not particularly surprising if we suppose that a mind is involved," says McLatchie. But things like minimal self-replication fidelity are wildly surprising on a naturalistic hypothesis. Read More ›
When it comes to biological life, even the simplest single-celled organism is an astonishingly complex multi-part system. Just how simple can a living cell get? On this ID The Future, Eric Anderson hosts another conversation with Dr. Robert Sadler to evaluate the claims of abiogenesis researchers. A recent Nature paper reports on an engineered minimal cell and how it contends with the "forces of evolution" compared to the non-minimal cell from which it was derived. In an attempt to find life's lowest common denominator, experimenters reduced the minimal cell down from 901 genes to 473 genes. The result was a fragile, irregular organism, sheltered and well cared for. But does this reduction in genomic complexity demonstrate evolution or devolution? Is it an unguided process at work or adaptation within the boundaries of an organism's design? "When people speak of evolution, they speak of random changes and natural selection," Sadler says. "But are they really random? Or does the organism have a built-in ability to change the genome to its own benefit?" Sadler puts the paper's results and claims in perspective for us. Read More ›
When scientists claim they have simulated early earth chemistry to create life from non-life, are they being honest? This episode of ID The Future is the fourth and final installment in a series of conversations between philosopher of science Dr. Stephen Meyer, author of Signature in the Cell: DNA and the Evidence for Intelligent Design, and Dr. James Tour, a world-leading synthetic organic chemist at Rice University. Dr. Tour has recently been engaged in a series of back-and-forth responses to attacks on his work from YouTube science communicator Dave Farina. This has given Tour a new opportunity to critique experts in the field of abiogenesis and allows an interested public to better evaluate both sides of the argument.
In Part 4, Meyer and Tour evaluate the work of chemist Bruce Lipshutz; specifically his work designing surfactant molecules that enable amide/peptide bonds. By itself, Lipshutz’s work developing synthetic techniques for doing chemistry in water is interesting and has value. But for those tempted to think that his work validates chemical evolutionary theories of the origin of life, Tour has bad news. Peptides don’t form in aqueous environments like water. A realistic prebiotic environment would not be capable of producing the reactions necessary to form proteins. And Lipshutz acknowledges this. In their conversation, Tour and Meyer discuss how Lipshutz applies hands-on chemistry that bears no resemblance to the likely conditions of a prebiotic earth. If anything, the work of Lipshutz and others in origin of life research is actually simulating the need for intelligent agency to move simple chemicals in a life-friendly direction. Says Meyer, "Even the modest movement they get towards life seems to be intelligently designed at each step of the way, and even the vocabulary will sometimes reveal that: ribozyme engineer, designer surfactants. Very curious!"
Watch the series on video at Dr. Meyer's YouTube channel: @DrStephenMeyer Read More ›
Have scientists made life in a laboratory? Two-thirds of the public think the answer is yes. What do you think? This episode of ID The Future is the third installment in a series of four conversations between philosopher of science Dr. Stephen Meyer, author of Signature in the Cell: DNA and the Evidence for Intelligent Design, and Dr. James Tour, a world-leading synthetic organic chemist at Rice University. Dr. Tour has recently been engaged in a series of back-and-forth responses to attacks on his work from YouTube science communicator Dave Farina. This has given Tour a new opportunity to critique experts in the field of abiogenesis and allows an interested public to better evaluate both sides of the argument.
In Part 3, Meyer and Tour continue their critique of the claims of chemist Lee Cronin, including his experiments on the formose reaction, autocatalysis, his attempts to conjure up lipids in oil, and more. Along the way, Tour explains how he got into the debate in the first place, providing some background on his interactions with Farina and how it led him to call out experts in the field. Tour and Meyer are careful to remind us just what life is and what it takes to build it. And on several occasions, you’ll enjoy Meyer’s insight into the big picture. These simulation experiments, says Meyer “are actually showing the difficulty of making life-relevant molecules…via an undirected process.” In other words, origin of life researchers are doing sophisticated chemistry with multi-million dollar equipment that can only be done in a modern lab! In the process, they’re showing us just how implausible chemical evolutionary theories actually are.
This is Part 3 of a 4-part series. Watch the video versions of these conversations at Dr. Meyer's YouTube Channel: @DrStephenMeyer Read More ›
On this ID The Future, we continue a four-part conversation series between philosopher of science Dr. Stephen Meyer, author of Signature in the Cell: DNA and the Evidence for Intelligent Design, and Dr. James Tour, a world-leading synthetic organic chemist at Rice University. Dr. Tour has recently been engaged in a series of back-and-forth responses to attacks on his work from YouTube science communicator Dave Farina. This has given Tour a new opportunity to critique experts in the field of abiogenesis and allows an interested public to better evaluate both sides of the argument.
In Part 2, Meyer and Tour discuss the work and claims of origin of life researcher Lee Cronin. They begin with a review of the four classes of molecules before critiquing Cronin’s foremose reaction experiments and his claims to have found a process that’s analogous to cell division. Tour also discusses the importance of chirality, as well as how amino acids behave in aqueous solutions. Turns out that “warm little pond” story we’ve been told for many years is chemically implausible. The discussion rounds out with a reminder of the information problem, something Meyer writes about at length in Signature in the Cell. Have prebiotic chemists made any progress on the sequence specificity problem? None whatsoever, says Dr. Tour.
This is Part 2 of a four-part series of conversations. Watch the video versions of these at Dr. Meyer’s YouTube channel: @DrStephenMeyer Read More ›
On this ID The Future, we kick off a series of conversations between Dr. Stephen Meyer and Dr. James Tour on the many challenges faced by origin of life researchers. Dr. Tour, a world-leading synthetic organic chemist at Rice University, has recently been engaged in a series of back-and-forth responses to attacks on his work from YouTube science communicator Dave Farina. This has given Tour a new opportunity to critique experts in the field of abiogenesis and allows an interested public to evaluate both sides of the argument. Philosopher of science Dr. Stephen Meyer hosts these engaging conversations. Meyer is author of the 2009 book Signature in the Cell: DNA and the Evidence for Intelligent Design, which explores theories attempting to explain the origin of the first life. So Meyer is the perfect candidate to unpack Tour's expertise and draw out key insights. In Part 1, Meyer and Tour critique the work of origin of life researcher Steve Benner. Along the way, they discuss the basic definition of life, the RNA world hypothesis, the problem with hands-on chemistry, and why the challenges facing origin of life research increase every year as our understanding of the cell grows. "What is being simulated is the need for intelligent agency to move simple chemicals in a life-friendly direction," says Meyer, and researchers "seem utterly blind to the role of their own hand, their own mind, in achieving the results that they get, such as they are." This is Part 1 of a four-part series of conversations. Watch the video versions of these at Dr. Meyer's YouTube channel: @DrStephenMeyer
Learn more about Dr. Tour's work via his YouTube channel: @DrJamesTour Read More ›
