Science Metaphors (cont.): The Anthropocene

On Monday, at an international meeting of geologists in Cape Town, South Africa, the 35 members of the Anthropocene Working Group summarized their seven years of work. Chief among their preliminary findings is that the current human-dominated chapter in our planet’s history, informally known as the Anthropocene, is geologically real. That’s “real” as in “recorded in the earth’s rock layers.” The report is the latest […]

River time, river tongue

It was a bird of confluences. Nameless, to us. Gray as cloud belly, large as raptor, with eyes streaked over black as if with a stick of charcoal. The first time I saw it, I stood shin deep in the narrow, clear Pitman River, steps away from the line of opaque jade water marking its […]

Redux: On My Way to Burning Man

In the summer of 2014 I backpacked across the Black Rock Desert to Burning Man with a small group of friends, after which this piece was originally published. It has been only slightly altered. Since the lake bed is from late Pleistocene origin, and the loud and luminous eruption of this annual event will be […]

How to Name a Caribou

Few species are more frustrating to taxonomists than the North American caribou. Ranging from the Canadian Arctic to the Great Lakes, caribou vary enormously in size, color, antler shape, habitat, and behavior. Some aren’t much bigger than domestic dogs; others are almost big enough to rub shoulders with a moose. For more than two centuries, […]

The Mathematical Elegance of the Grand Canyon

  I leave today for a backpack with my two kids off the North Rim of the Grand Canyon. Per our usual, we are going without maps, compass, gps, or a trail. This is how we do it together, traveling by line of sight, letting geography show us the way out and back. I used […]

The Map Box

I keep a wooden box on my bedside table. It’s cheap – an old Yalumba Wine case that I found on a curb somewhere, with a hinged lid and a shred of price tag still attached. Usually, it’s stacked high with magazines half read, a thing seldom opened and often dusty. But in all of […]

Damage Patterns

The other night I was in the midst of writing about the Ice Age when I strayed to the internet. Up came the Pulitzer Prize for breaking news photography that went this year to New York Times photographers Mauricio Lima, Sergey Ponomarev, Tyler Hicks and Daniel Etter for their coverage of the European refugee crises. Fresh from writing a […]

Live from the Bering Land Bridge

My desk is a mess, skulls, books and papers strewn. The cast of a saber-tooth cat skull sits on the corner, resting on its two double-edged daggers, reminding me of the book I am writing about the first people in North America, and what they encountered. As I crab myself over the keyboard, the Smilodon skull […]