FUN WITH CHEMISTRY—FIVE DECADES AGO
HOW TIMES change. Fun with Chemistry: Easy Experiments for Young People was originally published in 1944. A revised edition appeared in 1962, with additional printings up through 1973. However, were … Continue reading
HELLO, CAN WE HEAR YOU NOW?
NASA’s RECENT announcement that there are signs of water on Mars is a long, long way from any chance that it has life as we know it. However, this news … Continue reading
AFRICA COUNTS
EARLIEST MAN arose on the African continent, and with evolving culture came mathematics. There’s a standard book on this subject, now in its third edition, Africa Counts by Claudia Zaslavsky. … Continue reading
WHAT’S A “RENEWABLE RESOURCE” ANYWAY?
THE TERM “renewable resource” gets bandied about a lot. Indeed, I’ve been party to such bandying in discussion of California’s electricity and its sourcing. Most people think of hydro power, … Continue reading
WATER BUGS DO IT, BUT CAN WE?
GERRIDS ARE a family of insects including water bugs, pond skaters, water striders and jesus bugs, all of which can travel atop the water. Water bugs use their mass, musculature … Continue reading
MAN, THE FIERCEST—AND MOST SHORT-SIGHTED?—PREDATOR
HUMANS ARE hunter-gathers by nature. However, in contrast to other predators, we are also technologists devising improved means of predation. And we are the only predators hunting for trophy or … Continue reading
UNDERSTANDING THE DIFFERENTIAL
EVERY FEW years, I feel compelled to reeducate myself on the workings of an automotive differential. There’s nothing particularly life-critical about this; it’s akin to doing crosswords left-handed when one … Continue reading
TV HISTORY AND CULTURE
MY PRINCIPAL enthusiasms for television are British (its mysteries and period dramas) and historical (TV’s place in an evolving culture). I unearthed a book on this latter topic. I’ll save … Continue reading