One if by land, two if by sea. And it was the sea that the two of them came on—first, an 18-foot-long fish spotted by a snorkeling science teacher off California’s Catalina Island last week. Fifteen people had to haul the creature to shore. And then, on Friday, a slightly smaller one—just 14 feet—washing in […]
Curiosities
A couple of months ago astronomers reported the discovery of an unusual six-component “gravitational lens”—six images of the same object coming at us from slightly different positions in the sky. As light traveling across the universe passes a large mass, the gravity from the mass will serve as a kind of lens, bending the rays. […]
I do seem to keep referring to Freeman Dyson, even writing whole posts about him. The reason, I think, is that I want to write a profile of him, even though 1) profiles of him have been done and done and done, the most recent being a full-blown biography; and 2) he’s way above my […]
When I was young, my brother and sister and I caught salamanders in my grandparents’ garage and chased cats through the barn. The family farm was a big private playground, where we could poke at tadpoles in Nelson Lake (more like a large pond) and occasionally ride around on a giant lawnmower. More often than […]
Malaria causes more deaths in sub-Saharan Africa than car accidents, cancer, AIDS or war, even though the disease can be easily cured with an inexpensive pill. I find that fact incredibly disturbing, so I’ve traveled to Africa multiple times to write about this problem. But honestly, I mainly go to Africa because I like it. […]
First, if you please, a moment of silence for the thylacine. The Tasmanian tiger, last seen in the wild in 1930, was once Tasmania’s top predator, snacking on possums, wallabies, and the unlucky Tasmanian emu. (Despite persistent rumors, the thylacine did not drink blood. Sorry.) When European settlers arrived, bringing feral dogs, habitat destruction and […]
Yesterday I related the official version of how photons from the star Arcturus triggered an electrical signal that lit up the 1933 World’s Fair in Chicago. My research into that event, however, has sent me deep into the weeds. Most historical accounts claim that four observatories — Yerkes, Harvard College, Allegheny, and the University of […]
Arcturus, in the constellation Boötes the Herdsman, is the fourth-brightest star in the sky. It’s visible high overhead in late spring twilight, but you can also find it low in the west after sunset in September. All you need to do is let your eye follow the stars of the handle of the Big Dipper, […]