Ava at the Reef Tank interviewed me on my thoughts on evolution and fish husbandry. I confess that while I absolutely love aquariums, I don't have much by way of aquacultures at present. We've got a few really-easy-to-care-for Bettas and Telescope goldfish, but that is about it. I'm fairly lazy when it comes to maintaining animals in my lab and house, and try to chose animals that require minimal care (Leopard slugs anyone?). I did buy a female Betta with some breeding in mind, but it turned out to be a wild-type male. I was really disappointed since Bettas have such interesting breeding behaviors. Males make large bubble nests with their own saliva.
After female Betta has spawned, the eggs float up into the nest from below or the male Betta carries them there in its mouth. The male fertilizes the eggs and initiates embryo development. The male Betta will guard the nest for the next 24-48 hours until the eggs hatch. He also keeps a close watch on the eggs and will retrieve any eggs or fry that fall from the nest. He will also repair the nest by adding bubbles where needed. After the fry hatch (in 24-48 hours) the male will tend the fish for the next couple of weeks. How cool is that?
Wednesday, December 30, 2009
Tuesday, December 22, 2009
Richard Hamming is not a household name. As a long-time Bell Labs scientist, Hamming made lasting impacts on mathematics, computer science, and engineering. He also gave one of the best talks I have come across for anyone pursuing/interested in pursuing a career in science. This talk, titled "You and Your Research" was presented to the Bell Communications Research Colloquium Seminar on 7 March 1986. It could be titled "How to do Great Research".
Hamming first discusses his motivation:
At Los Alamos I was brought in to run the computing machines which other people had got going, so those scientists and physicists could get back to business. I saw I was a stooge. I saw that although physically I was the same, they were different. And to put the thing bluntly, I was envious. I wanted to know why they were so different from me. I saw Feynman up close. I saw Fermi and Teller. I saw Oppenheimer. I saw Hans Bethe: he was my boss. I saw quite a few very capable people. I became very interested in the difference between those who do and those who might have done.Hamming found that the major difference between good and great is largely one of attiHe summarizes his findings:
In summary, I claim that some of the reasons why so many people who have greatness within their grasp don't succeed are: they don't work on important problems, they don't become emotionally involved, they don't try and change what is difficult to some other situation which is easily done but is still important, and they keep giving themselves alibis why they don't.In other words, ask yourself three questions:
1. What are the most important problems in your field?
2. Are you working on one of them?
3. Why not?
Posted by John Dennehy at 12:53 PM