Some of the blogs that I find most interesting are also the most sporadic. Fortunately, RSS feeds mean their occasional utterances don’t disappear off my radar. Rob Carlson’s blog, synthesis, is an excellent, deeply considered blog on the rise of synthetic biology. (Full disclosure–I interviewed Carlson for a recent article in Discover.) Even though a week or two may pass between posts, they’re always interesting. His latest entry, on the hype around Craig Venter’s development of artificial chromosomes, is like a very sharp needle poking a very fat balloon:

Continue reading “Artificial Life: Please Breathe in This Paper Bag”

In my latest column for Wired, I take a look at the ever-fascinating intersection between engineering and biology. An electrical engineer-turned-ecologist uses the principles of circuits to track the flow of genes in endangered species. Remarkably, it works. Take a look

Originally published December 12, 2007. Copyright 2007 Carl Zimmer.

WIRED, December 12, 2007

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When we enter the wilderness, we like to leave the nonstop whir of electronics behind. The worlds of the mountain lion and of the integrated circuit seem to have nothing in common. But in fact, they are similar in some profound ways. Over the years, as mountain lions migrate and mate, their DNA flows across the landscape like electrons flowing around a circuit.

By borrowing some engineers’ insights about how circuits work, ecologists now have a promising new tool for helping conserve mountain lions and other threatened species.

Continue reading “Scientist Employs ‘Circuit Theory’ to Protect Endangered Species”

The New York Times, December 11, 2007

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The word “big” doesn’t do justice to whales. Humpback whales can weigh up to 40 tons. Fin whales have been known to reach 80 tons. Blue whales, the biggest animals to have ever lived, reach 160 tons–the same mass as about 2,000 grown men or 5 million grown mice.

It takes a lot of food to build such giant bodies, but how exactly the biggest whales get so much has long been a mystery. “We don’t have much of a sense of these animals in their natural environments,” said Nick Pyenson, a biologist at the University of California, Berkeley.

Continue reading “Fin Whale at Feeding Time: Dive Deep, Stop Short, Open Wide”

In tomorrow’s New York Times, I have a story about some very fun research–the study of the world’s biggest gulp. Some new research indicates that the biggest species of whales eat by gulping their own weight in water every thirty seconds. They do so in much the same way a parachute stops a race car.

Here’s the article.

Here’s the podcast (I come on at about 8:30)

Here’s the original paper.

Continue reading “Feeding Leviathans One Gulp at a Time”