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SETI Finds Intelligent Humans

January 15, 2012

The Search for Extra-Terrestrial Intelligence (SETI) is 50 years old this year. SETI’s latest scientific discovery was the detection of a human-made satellite in Earth orbit. In a sense, this counts as a success: the detection of a signal of intelligent origin from an extra-terrestrial source (beyond terra firma). The false alarm helped calibrate the instrumentation, but did little to garner support for the effort to find aliens. The SETI Institute was all SETI-ready to party hardy at the 50th anniversary of Frank Drake’s first search, but instead, found itself struggling to keep its doors open after a severe shortfall of private funds, highlighting questions about the scientific status of the long-shot project.

Amazing Facts

Science Grab Bag

January 13, 2012

Here's a random assortment of things floating around in the science news media – some fascinating, some informative, some disgusting. We’ll let the readers decide which is which. Since it’s Friday the 13th, a day to enjoy like any other day, we’ll give you a baker’s dozen to sample.

Astronomy

Tilt-A-World: Another Constraint on Habitability

January 12, 2012

Did you ever ride a Tilt-A-Whirl, one of those cheap carnival rides that makes you dizzy and sick? Our planet would be like that if its inclination were out of control. Without tilt stability, a new study reveals, we wouldn't be sick, we'd be dead, or never alive in the first place. It's not enough to be in the Habitable Zone. Would-be inhabited planets need to avoid a new problem, called “tilt erosion.”

Amazing Facts

Cosmologists Forced to “In the Beginning”

January 11, 2012

The late astronomer Robert Jastrow detailed in his 1978 book God and the Astronomers how cosmologists were repulsed by the idea the universe had a beginning. He found it quizzical that they would have such an emotional reaction. They all realized that a beginning out of nothing was implausible without a Creator. Since then, various models allowing for an eternal universe brought secular cosmologists relief from their emotional pains. It now appears that relief was premature.

Awards

Darwinian Explanations: Show or Snow?

January 10, 2012

We all know the proverbial “snow job.” That’s putting on an entertaining song and dance without doing the assignment. A college sophomore (wise fool) writes a 15-page term paper full of jargon that, on closer inspection, didn’t follow directions or didn’t answer the question – it reveals ignorance of the subject. A job applicant makes an impression with humor or appearance without demonstrating ability to do the work. A junior makes up a fanciful story to cover up why he didn’t mow the lawn. Scientists are supposed to explain things based on observation and testable hypotheses. If Darwinians really believe that an unguided, impersonal, purposeless mechanism led to the diversity of life on Earth, they need to show the evidence. Here are a few recent examples of evolutionary explanations. Check whether they “show” evolution, or distract attention with a “snow” job.

Amazing Facts

Titanosaur Bones Found in Antarctica

January 10, 2012

Strange as it seems, large sauropods of the Titanosaur variety have been found in Antarctica. This is the highest latitude sauropod ever found. It means that the large reptiles inhabited every continent; they walked the globe.

Darwin and Evolution

What Do Scientists Know About Prehistory?

January 9, 2012

Evolutionary biologists and geologists speak of events happening millions or billions of years ago as concrete facts. They are not observational facts, though; they are inferences from indirect evidence. Indirect evidence can often lead to different conclusions; in fact, some philosophers like Duhem and Quine argue for “under-determination of theory by data,” meaning that data can never converge to support just one theory. Some can demonstrate logically that there are an infinite number of theories that can explain a set of data. Evolutionary scientists counter that there are only one or a few that are reasonable (implying that theirs is among the limited set of reasonable ones). Recent discoveries that threaten to overturn past reasonable theories, though, cast doubt on their confidence.

Amazing Facts

Body Talk

January 7, 2012

Scientists sometimes just prove the obvious, like that men and women are different. If we can talk body without talking bawdy, there are some new discoveries about body works that should put a spring in your step today about how your body works.

Amazing Facts

Nature Does It Right

January 4, 2012

Scientists and engineers continue to find well-designed features in living things that are worth imitating.

Biology

Hear Ye: Another Darwinian Prediction Falsified by Fossils

January 3, 2012

In a classic test of evolutionary “post-diction” (predicting what should be found in the fossil record), scientists made a bold prediction of what insect ears would look like before the evolution of bats. Believing that the presence of bats, a new predator with sonar, would spur the evolution of insect ears, the scientists predicted that earlier insects would have less-developed ears, or none at all. Then they found exceptionally-preserved insect fossils from the Green River formation in Wyoming, and compared the fossil evidence with their prediction. What was found?

Astronomy

A Young Moon for Life

January 3, 2012

Our moon is unique in the solar system. Just the right size and just the right distance, it is positioned to stabilize the tilt of Earth’s axis, providing stable seasonal cycles. Science lacks data so far to know just how unique the Earth-moon relationship in a habitable zone is among other stellar systems. We know from the planets of our own solar system that moons come in all sizes, from tiny Deimos to massive Titan, and orbit in apparently arbitrary radii from their host planets. What astrophysicists can do is predict what would happen on earth if things were different. That’s what one scientist did. Another discovery could change the view of the moon’s surface being unaltered for billions of years.

Astronomy

Loving Dark Matter Rather Than Light

December 31, 2011

There are two ways to describe dark things in science. One is phenomena we know exist, even if invisible to us, because we can measure their effects with instruments (X-rays, infrared radiation). The other is darkness as a placeholder for something not yet explained. Cosmologists have been talking about “dark matter” for decades now, and “dark energy” since the 1990s. Which category of dark ideas are they? Whether scientifically valid phenomena or placeholders for ignorance, one thing is clear from recent articles: much more knowledge is needed.

Bible and Theology

Chinks in the Scientific Method

December 29, 2011

V & V. That’s shorthand in project design for “validation and verification.” Does the scientific method provide V & V? We are all taught to think that peer review, publication and replication help science to be self-checking, so as to avoid error. Some recent articles show that ain’t necessarily so. It may sound good in theory, but in practice, the ideal doesn’t always match the real.

Amazing Facts

Cells Optimize Their Tasks

December 28, 2011

The key to design in manufacturing is optimization – hitting the “sweet spot” between competing interests. It’s not always possible to have all the elements of a product be ideal. A laptop computer, for instance, can’t have an extra-large monitor and simultaneously have long battery life and compact design. A muscle car cannot be expected to have the best gas mileage. In the heyday of “faster, better, cheaper” spacecraft, engineers often joked, “pick any two.” In the same way, living cells have to optimize their operations. A couple of recent papers explore how they find that sweet spot.

Biology

Dino Expert Plays Chicken

December 28, 2011

Jack Horner, the dinosaur hunter who was science advisor to the Jurassic Park movies, wants to create a real dinosaur. He won’t use the movie method, trying to extract blood from Jurassic amber, because “DNA degrades too quickly,” he said. But he has a method he thinks will work: un-evolve a chicken back into its dinosaur ancestor.

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