The demons haunting thermodynamics

Pleistocene Extinctions: Haunting the Survivors

For many years, the megafaunal extinctions at the end of the Pleistocene have been assumed to have affected only those species that became extinct. However, recent analyses show that the surviving species may also have experienced losses in terms of genetic and ecological diversity.

Demons anD the Quest entropy

On Demons and Oracles

Targeting the endocannabinoid system to treat haunting traumatic memories

[This corrects the article on p. 100 in vol. 7, PMID: 23340520.].

Implementing Demons and Ratchets

Experimental results show that ratchets may be implemented in semiconductor and chemical systems, bypassing the second law and opening up huge gains in energy production. This paper summarizes or describes experiments and results on systems that effect demons and ratchets operating in chemical or electrical domains. One creates temperature differences that can be harvested by a heat engine. A s...