Thursday, August 09, 2018

Ecology and evolution are deeply intertwined. Just as the death and decay of organisms provide raw materials for subsequent generations, so too the deaths of species spawn new possibilities for future generations of species. Without extinction, there would be insufficient ecological space for evolution to explore alternative solutions and diversify into new life forms. When initially faced with some change to their native environments, species don’t grimly stay put and evolve into new forms better suited to the transformed conditions. They move, tracking the old habitat. In general, it’s only when the old habitat disappears that species are forced to adapt or die. Mass extinctions—the dying off of multiple, distantly-related lineages over vast areas in a short span of time—occur when one or more external forces wipe out a range of habitats, cutting off opportunities for tracking habitats.  Over the past half-billion  years, there have been five major mass extinctions, with the dinosaurs wiped out in the most recent of these. We now face the sixth mass extinction, which threatens to tear apart the fabric of the biosphere, with drastic consequences for most life on this planet, including us. In better times, species losses tick along at a barely discernable rate—perhaps one every five years. At present, somewhere between 50 and 150 species disappear every day, never to be seen again.... This time around, a single species—Homo sapiens—has become the external force driving the decimation of millions of other species. Yes, we are the asteroid now colliding with the planet. 


Scott D. Sampson, Dismiss dinosaurs as failures...and pave a path to a bleak future

Tuesday, July 24, 2018

“I explained that to May,” Verhofstadt said. “I said, You have a problem, you try to solve it. We on the Continent are different. We need first a concept. If we have a concept, then we are going to try and put every problem that we have inside that concept.”

“There are two kinds of European nations,” Kristian Jensen, the Danish Finance Minister, said last year, referring to Britain’s situation. “There are small nations and there are countries that have not yet realized they are small nations.”


EU folks talking to/about the UK on Brexit (in The New Yorker)

Thursday, July 19, 2018

I'm just an aging political officer.  Coffee is fuel, travel is opportunity.

In response to an old friend

Thursday, July 12, 2018

He admitted the possibility of a central intelligent cause, while being unable to identify that cause, or understand why its designs should be brought to fulfillment in such roundabout and often terrible ways.

Julian Barnes, Arthur & George




Tuesday, June 26, 2018

You don't need to be a deer to know to stay off the highway.


Heard on the Equator

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