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When people look up into the night sky, the stars seem fixed and immutable, as unchanging as the darkness of space itself, but the truth is that stars are born, live, and die in a never-ending cycle of creation and annihilation. These cycles stretch over such vast spans of time that to short-lived humans, they seem to last forever. No one knows just how many stars there are, but their number is almost beyond comprehension.

Every applicable government agency and almost all mainstream media outlets claim that chemtrails are merely a "conspiracy theory". They say that the lines in the sky are harmless condensation trails and that jet aircrafts have always produced emissions that can linger in the sky for hours as they spread out and form a hazy cloud-cover. They say that anybody who asserts that aircraft are routinely spraying us with toxic materials is crazy. If this is so, then why are we consistently seeing anomalously high levels of toxins in rainwater samples as well as in ambient air samples?

The Pleistocene spans a period from around 2.5 million years ago (mya) to just over 12,000 years ago, and it was an epoch of enormous change on Earth, mainly characterized by climate changes involving fluctuations between periods of extreme heat and long periods of glaciation. This period is commonly known as the Ice Age, despite the fact there were actually a number of separate periods of cold. The Pleistocene Era: The History of the Ice Age and the Dawn of Modern Humans looks at the development of the era, what life on Earth was like, and the origins of archaic humans.

We all know the history of science that we learned from grade school textbooks: how Galileo used his telescope to show that the earth was not the center of the universe; how Newton divined gravity from the falling apple; how Einstein unlocked the mysteries of time and space with a simple equation. This history is made up of long periods of ignorance and confusion, punctuated once an age by a brilliant thinker who puts it all together. These few tower over the ordinary masses, and in the traditional account, it is to them that we owe science in its entirety. This belief is wrong.

Mankind's obsession with felines is an enigma in and of itself. Unlike dogs, famously known as man's most excitable, trustworthy, and loyal friend, cats are oftentimes indifferent, guarded, and yet finicky little furry creatures that only yearn for attention and affection when one is neck-deep in work or otherwise preoccupied. And still, people adore them all the same.

The early history of our planet covers such vast stretches of time that years, centuries, and even millennia become virtually meaningless. Instead paleontologists and scientists who study geochronology divide time into periods and eras. The current view of science is that planet Earth is around 4.6 billion years old. The first four billion years of its development are known as the Precambrian period. For the first billion years or so, there was no life in Earth. Then the first single-celled life-forms, early bacteria and algae, began to emerge.

Es la intención de este audiolibro mostrar que en la relatividad general esas dos caras de la cultura muestran el mismo aire de familia que cualquiera puede apreciar entre el rostro delirante que la tradición nos ha legado de don Quijote y ese icono de la modernidad que es el rostro de un Einstein desmelenado.

Es la intención de este audiolibro mostrar que en la relatividad general esas dos caras de la cultura muestran el mismo aire de familia que cualquiera puede apreciar entre el rostro delirante que la tradición nos ha legado de don Quijote y ese icono de la modernidad que es el rostro de un Einstein desmelenado.

La tarea de resumir más de tres milenios de investigaciones sobre el cielo parece imposible, más difícil aún parece presentarla de modo que pueda ser conocido por cualquier tipo de oyente, y de modo que se disfrute con el descubrimiento de los cuerpos que pueblan el espacio y con la historia de los grandes hombres que hicieron avanzar la astronomía hasta sacar al hombre y a la Tierra, del centro del universo y colocarlo en un lugar periférico en la orilla del cosmos. Breve historia de la astronomía emprende esta tarea y consigue desplegar ante nosotros el universo.

Luis Íñigo nos ofrece una versión total de la alquimia, desde sus antecedentes en las doctrinas filosóficas del hermetismo, del gnosticismo, del pitagorismo y de la Escuela de Jonia hasta la actualidad en la que, si bien no se practica, sí que se han aprovechado sus hallazgos en medicina o en química. Nos muestra en el inicio del audiolibro las teorías de la alquimia, el trabajo de laboratorio de los alquimistas y los avances a los que llegaron con principios que aún pertenecen a la ciencia como el de causa y efecto.

The Very Best of Charles Darwin comprises On the Origin of Species and The Voyage of the Beagle. The first introduced the theory that populations evolve over the course of generations through a process of natural selection. The evidence was gathered on the Beagle expedition in the 1830s, recounted in The Voyage of the Beagle, which is both a travel memoir and a scientific field journal of anthropological, biological, and geological interest.

The Tragedy of American Science explores how the US economy’s addiction to military spending distorts and deforms science by making it overwhelmingly subservient to military interests. The primary motive driving American science and technology has become the search for new and more efficient ways to kill people. This transforms science from the classic ideal of a creative force for the advancement of humankind into its destructive and antihuman opposite.

The history of particle physics, the hunt for the most elusive particle, and the fundamental questions the search has inspired.

The Scientific Revolution was a chain of events that unfolded during the 16th and 17th centuries, which brought about drastic changes in scientific thought. Modern science emerged as advances in astronomy, biology, chemistry, mathematics, and physics transformed society’s perceptions of nature.

The 1918 outbreak of the H1N1 strain of influenza, popularly known as the Spanish flu, killed more people worldwide than World War I, which ended the same year. It infected nearly one-third of the world's population and killed 10 percent of those it struck. In its wake, schools and businesses closed, hospitals became overwhelmed, and the sick spilled out into makeshift care centers in public spaces. Policemen, public transportation workers, and everyday citizens in face masks were a common - and eerie - sight.

Tant de découvertes ces dernières années ont achevé de nous perdre dans le labyrinthe des premiers hommes et la diversité de nos ancêtres. Pour suivre cette longue évolution, d'abord simienne et partagée, puis tout à fait humaine et unique, Pascal Picq raconte dans un récit complètement inédit nos origines communes avec les singes. Cela se passe au cœur de l'ère tertiaire, durant le long Miocène (de -23 à -5,5 millions d'années), l'âge d'or des hominoïdes. Et cela, plusieurs millions d'années avant l'émergence de notre lignée africaine !

Even the greatest minds in medicine have been terribly, terribly wrong. Boneheads and Brainiacs profiles the winners of the Nobel Prize in Medicine from 1901 to 1950 - a surprisingly diverse group of racists, cranks, and opportunists, as well as heroes, geniuses, and selfless benefactors of humanity. Forget all the ivory tower stereotypes of white-coated doctors finding miracle cures. Boneheads and Brainiacs reveals the messy human reality behind medical progress, in a highly entertaining audiobook for the ordinary listener.

Les pirates des Caraïbes avaient imaginé le Draque, l'ancêtre du Mojito, dès le 16e siècle. Et les marins anglais, aidés des Amérindiens, avaient inventé le Punch avant que la Marine anglaise songe elle-même au Gin Fizz et au Gin Tonic pour guérir ses troupes. Aux États-Unis, les bars clandestins, les speakeasies, qui ont proliféré à l'époque de la prohibition ont mis à la mode certaines mixtures, souvent pour camoufler le goût douteux de l'alcool frelaté qu'on y servait.

Ambassadors from Earth relates the story of the first unmanned space probes and planetary explorers - from the Sputnik and Explorer satellites launched in the late 1950's to the thrilling interstellar Voyager missions of the '70's - that yielded some of the most celebrated successes and spectacular failures of the space age. Jay Gallentine delivers a quirky and unforgettable look at the lives and legacy of the Americans and Soviets who conceived, built, and guided those unmanned missions to the planets and beyond.

De toute éternité, les communications à distance, les télécommunications, se sont avérées essentielles pour les humains. Selon les époques, elles ont fait appel à l'imagination ou à l'ingénierie, et toujours de manière industrieuse. Ainsi, les trompettes, les tambours, la fumée ou le langage sifflé transmettaient des messages aux populations locales bien avant l'avènement du télégraphe optique, du télex ou de la téléphonie.