(Dutton, 235 pages)

Unless visiting all seven continents is on your bucket list, you probably don’t think a lot about the northern and southernmost parts of the planet. The Arctic and Antarctica make for a good documentary every couple of years (Antarctica: A Year on Ice and March of the Penguins come to mind) but then the subject retreats for most of us, ice usually confined to a rink or a drink. Not so for scientists like Neil Shubin who have spent years journeying to places with temperatures most rational people would rather avoid.

In Ends of the Earth, Shubin recounts his polar experiences, which began when he pitched a tent as a student with three other researchers in Greenland in 1988. Just staying alive in such an unforgiving landscape is a challenge, and when gear or equipment breaks there is no Amazon delivery.

And yet, “There is something almost magical about living in an environment where the sun never sets for a month or more while being disconnected from the rest of humanity,” Shubin writes. “Running streams exiting melting glaciers hold water so pure we drink it unfiltered from the source. Every babbling glacial brook could be a water fountain or, for extraordinarily hearty souls, a bath.” Isolated with a few others sharing the experience, “The world becomes small and intense.” Shubin isn’t a travel writer, but he might as well be, with the sheen he puts on the arctic experience.

The Antarctic Treaty of 1959 established that the continent, most of which is layer upon layer of ice, be used for scientific study; since then 29 countries have established 70 research bases, the most prominent of which is the U.S.-run McMurdo Station, where more than 1,000 people work during the summer, 300 in winter. (Fun fact: You can take a break from watching live panda or eagle cams and watch McMurdo cam on a government website, at least until Elon Musk finds out about it.)

There, one of the exercises new researchers experience early on is a “mock crevasse rescue” — highlighting that one of the dangers of living in this environment is falling into a practically invisible 200-foot crack in the ice. There are methods to pull people out, but still not everyone survives, and honestly, the photograph of a massive crevasse in this book is the stuff of nightmares for people who don’t enjoy being cold. Astonishingly, a member of Shubin’s team volunteered to be lowered into a crevasse so the group could practice a rescue, and he was so moved by the beauty of what he saw that “his shouts from 20 feet down were as if he was undergoing religious ecstasy.”

In fact, there seems to be a scientific ecstasy that permeates polar research with its out-of-this-world experiences and extraordinary sights, such as blue ice, ancient ice that looks like a “shiny version of an aquamarine” and which, when melted to drink, “means consuming water from snow that fell when Neanderthals roamed the Earth,” Shubin writes.

While the Arctic region is inhospitable to humans and most forms of flora and fauna we know, it has its own hardy life, including a tree called the Arctic willow, which instead of growing upward grows sideways and either atop the ground or below it. (Arctic leaf peepers will want to know that the leaves of this tree turn orange in August.)

And life in Antarctica includes cousins to New England’s woolly bear caterpillars, the fuzzy ones with the weather-predicting stripes. In the Arctic they spend most of their life frozen and awaken only for a few summer months to feed on willow leaves before freezing solid again. This cycle occurs for seven to 15 years, Shubin writes, until the caterpillar becomes a moth and lives out the rest of its short life: “Nearly a decade of freezing and thawing, feeding, and basking, all the while avoiding predators, is all in the service of two weeks of flying and mating.”

Shubin walks us through the science of how animals survive polar temperatures — and humans, too, including the story of a skier who had an accident that left her mostly submerged in ice for more than an hour. After she was cut from the ice, doctors were able to restart her heart at a hospital. She eventually made a full recovery. Shubin quotes a doctor who says, “You’re not dead until you’re warm and dead” — miserable as it may be, cold often works in the service of life.

Scientists working in polar regions deal with the cold with a combination of high-tech clothing and purposeful exercise. “I’ll routinely do abdominal crunches when I get into my cold sleeping bag before going to sleep each night. The burst of activity makes for a cozy furnace inside,” Shubin writes.

It is asides like these that make Ends of the Earth mostly compelling even though Shubin, ever the scientist, at times teeters into AP science class mode. Now a professor at the University of Chicago, he comes by that naturally, yet his ability to make science engaging resulted in a PBS series based on his 2008 book Your Inner Fish. Credit Shubin, also, with the ability to write seriously about climate change in an apolitical manner. He is an observer, not a flamethrower, and yet wants all of us to consider what will happen as ocean levels rise up to 120 feet in the next few centuries. (There will be more wooly bear caterpillars for one thing.)

Shubin recalls the famous commencement speech given by David Foster Wallace in which the late author describes a fish asking another, “What is water?” In Ends of the Earth he invites us to consider what is ice other than an annoyance glazing our driveways. The answers are more complex than we might think. B —Jennifer Graham

Featured Image: Ends of the Earth, by Neil Shubin