In the May 27 SN: Genetic intruders, seeing Chaco in a new light, an artificial womb, Mars’ origin revisited, domestication of the horse, glimpsing Earth’s glacial past, what’s in a fang blenny’s bite and more.
each week, a scientist takes a stroll on the barren upper slopes
of Hawaii’s Mauna Loa
volcano, a basketball-sized glass sphere in hand. At some point, the researcher
faces the wind, takes a deep breath, holds it and strides forward while
twisting open a stopcock. With a whoosh lasting no more than a few seconds, 5
liters of the most pristine air on the planet replaces the vacuum inside the