Forward by Failure

By: | October 29, 2014

2nd season rifle 2014

A few years ago, I decided to take up hunting. This was kind of a big deal, because I’d spent the first decade-plus of my adult life as vegetarian. I became a big game hunter for the same reason I raise chickens — to know where my food comes from and ensure that it’s raised and harvested humanely. I figure if I’m not willing to kill it myself, I have no business eating it.

I quickly learned that hunting red meat is much harder than raising chickens. First of all, I had to acquire a hunter safety card, which required attending a one-day class on firearm safety and hunting regulations. The class included several videos demonstrating what not to do (like shooting from a vehicle or across a road), practice handling firearms and primers on hunting regulations. It ended with a written exam and a trip to the shooting range to fire a .22 rifle.

The next summer, I focused on learning to shoot. It took me multiple trips to the firing range before I felt comfortable handling the 30-06 rifle I’d chosen. And there was still the issue of actually using it to kill something. Continue reading →

Seeing Mammoths

By: | October 28, 2014

mammoth imageSeeing a mammoth is not the same as looking over a zoo wall at a modern elephant, or even standing next to a live, gray, wrinkled wall of flesh with scant, coarse hairs. Watching the flexible, prehensile reach of an elephant’s trunk and the slow cross-wise chewing of hay, I’ve found it hard to see the larger mammoth inside.

Elephants and mammoths are obviously related, both proboscideans evolved from a trunked African animal the size of a pig some 60 million years ago, eventually becoming the largest land animal on earth. The earliest version of the mammoth, Mammuthus subplanifrons, originated in the African tropics about 5 million years ago. A later mammoth, Mammuthus meridionalis, entered forests and grasslands in Europe and Asia about 3 million years ago, eventually leading to the famed wooly mammoth, Mammuthus primigenius, which adapted to cooler, more arid treeless conditions in the north from the British Isles to eastern Siberia and into North America. The wooly mammoth was a latecomer to the New World, arriving from Siberia across the land bridge only 100,000 years ago. A previous mammoth species had arrived in North America a million years earlier and moved into warmer more southerly parts of the continent where it evolved into the what is known as the Columbian mammoth, Mammuthus columbi. This was one of the larger proboscideans to have ever lived, up to 13 feet tall at the shoulder.

In museum collections, I’ve looked for this animal by running my hands along the arcs of their tusks, 10 or 12 feet of solid ivory, colored chestnut from time in the ground. In the clean lighting and gentle hum of air ducts, I still couldn’t see the actual beast. Taken out of the context of its environment, I saw paleontologists and plaster jackets more than I saw mammoths.

The best view I ever had of this animal was in the gypsum wastelands of a bombing range in southern New Mexico where mammoth tracks have been repeatedly discovered. Continue reading →

Guest Post: Affair of the Heart: IV. Day of Reckoning

By: | October 27, 2014

op roomMy wife Anne and I arrived at Johns Hopkins’s gleaming new Sheikh Zayed Tower at 5:15 AM on September 8.  I knew I would soon be on an operating table with my breastbone split  and my ribcage cranked open, exposing my heart and the aortic aneurysm that had brought me here.  A  heart-lung machine would be circulating blood throughout my body; I would be hooked up to a ventilator; a variety of tubes would be draining fluids from my chest and bladder; and an array of drips and syringes would be feeding fluids and drugs into my veins and arteries, keeping me hydrated and, I hoped, unconscious.  Yet I felt strangely calm, curious to know how it would all turn out. Continue reading →

The Last Word

By: | October 25, 2014

3861636375_c282289566_bOctober 20-24, 2014

In his third post, Colin Norman faces a daunting prospect: heart surgery. “The operation isn’t as simple as snipping out the piece of aorta that includes the aneurysm and sewing in the Dacron tube. Because my aneurysm is right at the root of the aorta, the surgery would involve the left ventricle itself.”

Richard Panek treats us to more bad science poetry. Here’s my favorite line: “The Higgs is a boson, not something with clothes on.”

Karen Masterson explores the US’s history of ham-handed attempts to “help” Liberia, and wonders whether the effort to get the ebola outbreak under control will be the latest example. “Don’t step in again with a big foot and then leave. There’s no pill to make Ebola go away; it will come back.”

Helen Fields catalogues all the times that she has been pooped on by birds in the past decade. The list is extensive. “An informal poll of Facebook friends finds that I have been pooped on more in the last decade than everyone but a dog walker and a biologist.”

And on Friday, Ann Finkbeiner calls on Geoff Brumfiel and Sharon Weinberger to discuss Lockheed Martin’s announcement that the company is a decade away from having a fusion reactor. Geoff and Sharon are skeptical. “Couldn’t you just assert that you, Ann Finkbeiner, are going to build a fusion reactor ‘within 10 years.’ That’s what everyone else does,” Sharon says. Ann agrees to try.

Photos: “Fusion Reactor” by Annabeth Robinson, via Flickr

 

Conversation with Sharon & Geoff: Starship Fusion

By: | October 24, 2014

Last week, Lockheed announced it had a small team working on what it calls a Compact Fusion Reactor.  Fusion is the opposite of fission that’s used in nuclear plants today; it can produce enormous amounts of energy; the fuel for  itis cheap and plentiful; a small fusion engine would solve the world’s energy problems. I first wrote about fusion energy maybe 30 years ago; the saying then was “fusion is always 20 years away.” Lockheed now says they’re “as little as 10 years” away.  So my fusion-knowledge is clearly out of date.  I asked my friends and colleagues, Geoff Brumfiel who has written a lot about fusion, and Sharon Weinberger who writes about national security and technology, to explain what Lockheed could possibly be talking about.

3861636375_c282289566_bAnn:  So  Lockheed is saying its airplanes could run on fusion, or something like that. How can aircraft run on fusion anyway? Given that fusion is what powers the sun and h-bombs, wouldn’t that be a little dangerous? or just hot?  Anyway, didn’t the Starship Enterprise already run on fusion?  While I pondered these questions, Geoff sent along the Lockheed press release which ends with, “Do you have any questions?”  Well, Geoff, do you?  I trust they’re better than mine.

Geoff: To really know whether a fusion device like this will work requires a detailed understanding of the technology and geometry of the machine. And because the interactions of the fuel inside a machine like this are so complex–you also have to review some real data. To say whether this new concept will work, I’d want to ask lots of questions along those lines.

And yet, I don’t want to ask those questions, because narratively this fits the classic mold of a fusion machine that won’t work (or at least won’t work without a lot of money):

  1. It’s being developed by people outside the field of fusion research.
  2. They think they can make it compact, which is notoriously hard to do.
  3. And they’re promising to do it quickly, but they haven’t done it yet.

I’ve seen this story too many times before: In roughly chronological order, we have the Huemul Project, the British Z-pinch, The Farnsworth Fusor, Cold Fusion, The Polywell Machine, Bubble Fusion, General Fusion…  Just writing that list makes me feel tired.

Ann:  So because this is a classic failure story, does that mean it won’t happen this time? Continue reading →

On a Decade of Getting Pooped On By Birds

By: | October 23, 2014

I know you're planning something, bird

1. Washington, D.C., 2004 or so

A bench around a circular planter, with a tree in it. I was eating my lunch. I felt something on my arm.

We call it poop, but the stuff that comes out of birds’ behinds is more complicated than that. Birds, like most vertebrates that aren’t mammals, have a single all-purpose exit called a cloaca. From that hole they expel eggs, the leftovers of their meals, and the products of their kidneys.

I assume that’s why the waste is two-toned.

 

Continue reading →

Guest Post: Bobby Gborgar Joe Speaks From His Bones

By: | October 22, 2014

2145430329_18c81a0514_oOctober 14, 2014:  At a heady, expert-packed Ebola forum assembled at Johns Hopkins University, a Liberian man said more in a minute and half than everyone else said in five hours. He summed up the United States tainted history with Liberia and begged for respect, this time around.

The expert forum was the best, yet. Top thinkers on the Ebola problem shared views and experiences; mapped the bioethics of green-lighting vaccines (getting approval to use them, provided people sign consent forms); talked about the bone-chilling exponential growth of this freak of nature, and how it could murder a million Africans by next year; and concluded that the global community is incapable of slowing its spread because of poor infrastructure.

Michael Osterholm, an outspoken biosecurity exert, called the World Health Organization’s response impotent, and questioned its future. “This outbreak is W.H.O.’s 9-11,” Osterholm said. “This will be a really very, very important time for reconsidering global health and how we respond to global health crises.”

At the end of many hair-raising presentations, this panel of all white men, but for one white woman, opened the microphones for questions.

That’s when Bobby Gborgar Joe spoke. Continue reading →