Citation: Moreira PA, Aguirre-Dugua X, Mariac C, Zekraoui L, Couderc M, Rodrigues DP, Casas A, Clement CR and Vigouroux Y (2017) Diversity of Treegourd (Crescentia cujete) Suggests Introduction and Prehistoric Dispersal Routes into Amazonia. Front. Ecol. Evol. 5:150. doi: 10.3389/fevo.2017.00150 Diversity of Treegourd (Crescentia cujete) Suggests Introduction and Prehistoric Dispersal Routes in...

By terms-allowed-in-types capacity, the Logic of Proofs LP includes formulas of the form t : φ(t), which have self-referential meanings. In this paper, “prehistoric phenomena” in a Gentzen-style formulation of modal logic S4 are defined. A special phenomenon, i.e., “left prehistoric loop”, is then shown to be necessary for self-referentiality in S4-LP realization.

Copyright: © 2013 Woldemeskel M. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Cancer is a general term used to denote malignant neoplasms in humans and animals that if untreated often end up with fatal meta...

Since primordial times, vultures have been competing with man for animal carcasses. One of these vultures, the once widespread bearded vulture ( Gypaetus barbatus ), has the habit of bathing its polluted feathers and skin in red iron oxide - ochre - tainted water puddles. Why? Primitive man may have tried to find out and may have discovered its advantages. Red ochre, which has accompanied human...

A Prehistoric Mural in Spain Depicting Neurotropic Psilocybe Mushrooms? The Selva Pascuala mural, a work of post-Paleolithic rock art in Spain, contains fungoid figures herein hypothesized to depict neurotropic fungi, especially Psilocybe hispanica, a species that occurs in a neighboring region. This hypothesis is based on features of these figures related to fungal morphology, along with ethno...

There is a wealth of archaeological evidence, from bones excavated in prehistoric middens, piles of fruit stones and sea shells, that give us concrete indications of food consumed at various prehistoric sites around Europe. Added to this information we have pollen analysis from settlement sites and charred plant macrofossils. Wetland archaeology informs us in much more detail not just which foo...