The shadow of Curiosity

This morning August 6th, after fourteen years of planning and months of anxious waiting, the Curiosity mars rover has landed, sending as a proof of its success a fisheye picture of pebbles, dust, and its own shadow on the surface of Mars. It is the largest and most advanced machine to ever land on another […]

Mars as a social question

“Allopatric speciation” occurs when a biological species divides in two distinct populations, due either to the emergence of a natural boundary (river, mountain) or to migration in opposite directions. Over hundreds of generations, the genotypes of both populations evolve on their own until, finally, they become two separate species. For some species of fruit-flies, this […]