A circumzenithal arc is a rainbow-colored arc near the zenith (directly overhead) — it's the 'smile in the sky.'

The rafflesia flower is the world's largest bloom — up to 1 meter across and smelling of rotting flesh.

Restoring wetlands sequesters carbon 55 times faster per hectare than planting tropical forests.

A fire whirl (fire tornado) forms when fire creates its own convection column that begins to rotate.

Some trees can communicate with each other using underground fungal networks.

A pyrocumulus cloud can form above large wildfires — the heat creates its own thunderstorm that can produce dry lightning.

Fogbows are white rainbows formed when droplets in fog are too small to separate colors.

Some trees can communicate with each other using underground fungal networks.

Lichens are not single organisms — they're a symbiosis between fungi and algae (or cyanobacteria).