I have vivid memories from when I was a kid in Texas of travelling out into the countryside to watch my oldest brother and his friends launch rockets. This wasn’t some ’60s radicals’ attempt to overthrow the government of Swisher County, but a new hobby called model rocketry. The rockets came in all sizes, from …
Category: Blog
Air
A report this week that air pollution, particularly ground-level ozone, is a more serious problem in Canada than previously thought got me to thinking about this stuff that we breathe. What is air? It’s a question we don’t ask very often, because we generally take air for granted. Air is the mixture of gases comprising …
The solar system
Voyager 1, now in interstellar space, sent back a final present a few years ago: a “family portrait” of the solar system, showing a shrunken sun and several tiny flecks of light–the planets. One of those flecks, a tiny blue dot, is the Earth. The past 20-some years has seen an explosion in planetary knowledge …
Hearing aids
Hearing is a remarkable sense that most of us take for granted–but not everyone can. Due to physical damage or simple aging, many people have lost some or most of their hearing. Enter the hearing aid, a device for amplifying sound and directing it into the ear. The original hearing aid was the hand cupped …
Nanolithography
My roommate in university had a quirk that annoyed teachers no end: he had the smallest handwriting of anyone I’ve ever met. While I used big old Bic pens on wide-lined notebook paper, he was using fine-point mechanical drafting pencils on the narrowest-lined paper he could find, and still leaving lots of room for any …
Wearable computers
Computers have become so ubiquitous they’re in most of our gadgets and on most of our desks. But guess what? They’re on the verge of becoming even more widespread: soon, we may be wearing them. The quick definition of a wearable computer is one that is always with you (and always on), is comfortable and …
Biometrics
Are you fed up with having to carry 2,762 separate plastic cards in your wallet for buying gas, getting Air Miles, withdrawing money, renting videos and collecting frequent-ice-cream-eater points? Then you’ll be glad to hear about biometrics. Biometrics is the measurement of tiny differences among individuals for the purposes of identification. Fingerprinting is probably the …
The Saga of NEAR
Monday, a plucky little spacecraft called NEAR, for “Near Earth Asteroid Rendezvous,” is going to attempt to make space exploration history. Back in February of 1996, the 805-kilogram spacecraft, a short, stubby cylinder with four solar panels forming a cross shape at one end, was launched to rendezvous and orbit the asteroid Eros, whose orbit …
Ballooning around the world
Aeronauts call circumnavigating the world in a balloon “the Last Great Adventure.” One attempt ended in the Pacific Ocean on December 26, but other balloonists are raring to go–eight expeditions in all. The most technologically advanced balloon ever to make the attempt, sponsored by Re/Max, may have already been launched by the time you read …
Santa physics
A few years ago I wrote a column about the fledging science of “clausotechnolometry,” the study of the advanced technology of Santa Claus. Well, time marches on, and this year I am pleased to be able to bring you the results of exciting new research into this field. Santa Claus has been the subject of …
Breakthroughs of 1998
New Year’s is traditionally a time of looking back at the previous year’s accomplishments. Every year brings a flood of new scientific discoveries, and 1998 was no exception. Choosing which to mention would is a daunting task; fortunately, the editors of Science magazine already did all the work. Briefly, I want to pass along to …
Why we crave chocolate
It’s the season for sweets, and one of the favorites, this Christmas and every Christmas (not to mention Valentine’s Day, Easter, and assorted other special occasions) is chocolate. Why do we crave this unique food? It’s not just the taste. As new research has shown, a lot of the pleasure we get out of eating …
My latest live walk and vlog
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