The Great Permian Dying / La gran mortandad del Pérmico

The Cambrian explosion of life-forms led to the colonization of the land’s surface around 475 to 400 million years ago.

“Macrobes” (II): Beginning of the Phanerozoic / “Macrobios” (II): Inicio del Fanerozoico

“Macrobes”: Ediacaran Period fossils / “Macrobios”: Fósiles del periodo Ediacárico

Extraterrestrial life in our solar system? / ¿Vida extraterrestre en nuestro sistema solar?

Snowball Earth, Lynn Margulis and Endosymbiosis / Tierra en bola de nieve, Lynn Margulis y Endosimbiosis. Fictional Snowball Earth /...

(Traducción en español más abajo) See: https://www.science.org/content/article/how-life-could-have-arisen-rna-world and: A prebiotically...

(Versión en español más abajo). Earth’s biosphere, the part of our planet where life is present, extends from the atmosphere’s higher...

Messieurs, c'est les microbes qui auront le dernier mot. (Gentlemen, it is the microbes who will have the last word; Caballeros, los...

(Spanish version below) Paleontologist Peter Ward and geophysicist Joseph Kirschvink have suggested that the epoch of greatest species...

(Spanish version below) Possibly life has evolved so much on our planet during the last four billion years that it is impossible for us...

Geological time spiral / Espiral del tiempo geológico The ability of some molecules to self-reproduce has been observed using computer...

Charles & William Darwin For a biologist there is probably no other scientific figure of greater relevance than Charles Darwin. Although...

On the subject of the evolution of intelligence, one of the topics of my eBook. Jane Goodall, the renowned primatologist, was the first...

...a general principle in nature ... will cause many varieties to survive the parent species, and to give rise to successive variations...