In spring, whole neighborhoods turn pink — but the Japanese apricot, apricot, peach, and plum are all different trees, not cherries. They look alike because they are close cousins in the genus Prunus. Here is how to tell the five spring blossoms apart, starting with the flower stalk.
A single fair-weather cumulus cloud weighs about 500 tonnes — as much as 100 elephants. So why doesn’t it fall? We look at the terminal velocity of tiny droplets, updrafts, the buoyancy of moist air, and the physics of the moment rain finally falls.
The Moon shows us the same face not because it ‘doesn’t rotate’ but because its rotation is perfectly synchronized with its orbit. We explore the exquisite principle of tidal locking written into the Earth-Moon system.
A palm-sized pink rodent overturns our assumptions about mammals again and again – a eusocial colony ruled by a single queen, a body in which spontaneous tumours are extremely rare, a death rate that barely rises with age, and a metabolism that endures on fructose when oxygen is cut off. A look at the intricate design of the naked mole-rat, from the primary sources.
More than 80,000 woodblocks have lasted over 770 years with no special machinery. From wild-cherry blocks, end pieces and lacquer to Janggyeong Panjeon’s siting, lattice windows and floor layer — the layered conservation design of the Tripitaka Koreana, separating fact from myth.
The eerie blue glow of a reactor pool is not the color of radioactivity, nor a broken speed limit of light. It is a ‘sonic boom of light’ left by a particle that outran light itself — inside water. Here is exactly how Cherenkov radiation works.
