It’s Science, but Not Necessarily Right

Posted on by admin

The New York Times, June 25, 2011

Link

One of the great strengths of science is that it can fix its own mistakes. “There are many hypotheses in science which are wrong,” the astrophysicist Carl Sagan once said. “That’s perfectly all right: it’s the aperture to finding out what’s right. Science is a self-correcting process.”

If only it were that simple. Scientists can certainly point with pride to many self-corrections, but science is not like an iPhone; it does not instantly auto-correct. As a series of controversies over the past few months have demonstrated, science fixes its mistakes more slowly, more fitfully and with more difficulty than Sagan’s words would suggest. Science runs forward better than it does backward.

Continue reading “It’s Science, but Not Necessarily Right” →

A Beautiful Web of Poison Extends A New Strand

Posted on by Matt Kristoffersen

I just got back yesterday from the annual meeting of the Society for the Study of Evolution. It took place in a big hotel on the outskirts of Norman, Oklahoma, during a windy heat wave that felt like the Hair Dryer of the Gods. It had been a few years since I had last been to an SSE meeting, and I was struck by how genomic everything has gotten. No matter how obscure the species scientists are studying, they seem to have outrageous heaps of DNA sequence to analyze. A few years ago, they would have been content with a few scraps. Fortunately, SSE hasn’t turned its back on good old natural history. There were lots of fascinating discoveries on offer, about species that I had assumed had been studied to death. My favorite was a talk about the rough-skinned newt, the most ridiculously poisonous animal in America.

Continue reading “A Beautiful Web of Poison Extends A New Strand” →

The Visitors That Came to Stay

Posted on by admin

The Wall Street Journal, June 18, 2011

Link

We are part virus. This bizarre yet inescapable fact has been revealed over the past 30 years, as scientists have spelunked their way through the human genome and encountered stretches of DNA with the telltale chemical signatures of viruses. All told, they’ve found 100,000 such segments so far. As Frank Ryan explains in “Virolution,” these pieces of virus DNA ended up in our genome through a peculiar kind of infection. From time to time, viruses slipped their DNA into the eggs and sperm of our ancestors. Parents then passed down the virus DNA to their offspring.

Continue reading “The Visitors That Came to Stay” →