Webb Spots Chemical Weather on Brown Dwarfs
Brown dwarfs are heavier than planets but lighter than stars. Their atmospheres resemble a bubbling pot: clouds of scorching sand and iron droplets rise and fall.
The Red Edge of Life and Its Mineral Mimics
When the light of a distant planet is split into colors, it suddenly jumps at the boundary between red and invisible infrared, as if someone flipped a switch. This is how the vegetation red edge manifests itself: chlorophyll is transparent to near-infrared radiation, and the leaf, to avoid overheating, reflects it away.