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Organizer of body axes: 600 million years old molecular principles

In humans and in animals, the correct position of tissues, organs and appendages is essential. Two body axes (the head-tail and the back-belly axes)...

Early Earth’s air weighed less than half of today’s atmosphere

The layers on this 2.7 billion-year-old rock, a stromatolite from Western Australia, show evidence of single-celled, photosynthetic life on the shore of a large...

Origin of life: An artificial comet holds the missing piece

Ultraviolet processing of pre-cometary ices (left) reproduces the natural evolution of interstellar ices observed in molecular clouds (right, the 'Pillars of Creation'), leading to...