The next day, the researchers played the tone once to reactivate the fearful memory and then, after a delay of 10 minutes or an hour, initiated extinction training, playing the tone 18 more times without delivering any shocks.
"Potentially, in our sadness, we can vow not to continue to let it happen, and acknowledge the role we humans are playing in causing the extinctions," Peddie said.
One of the most enduring and stirring debates in archeology revolves around the role humans played in the extinction of large terrestrial mammals (megafauna) and other animals near the end of the Pleistocene.
Scott Brown of Entertainment Weekly said that Extinction "plays like a flabby middle chapter, full of nerdy details but fraudulently short on the ruined Vegas-scape that ads have been promising".
Extinction played a pivotal role in the reduction of their ranges and diversity throughout the late Quaternary, leaving only V. komodoensis as an isolated long-term survivor.
Considering all these observations together, it is clear that although extinction plays a crucial role in determining subpopulation dynamics, it is not expected to interact with the effects of pinning at the metapopulation level, except when there is variation in the density of pinning.
The book drew a very powerful analogy between the birds used to warn miners of dangerous conditions and the similar role modern species extinction should be playing for Homo sapiens in general.
how closely guarded, proprietary mathematical algorithms and immersive, interactive technology are used to keep people gambling until they -- in the industry jargon -- "play to extinction".
But the sense of effort — rare to the point of extinction in Argerich's playing — disappeared when she reached the oasis of the slow movement.
"This government... promised to halt sale of playing fields... last year 440 applications led to total extinction of the facilities..."...
