NASA's Marshall Space Flight Center:
Airplane condensation trails (contrails) across the English Channel
jaropincet:
A380 Qantas, QF32 LHR-SIN-SYD, UL984
sbszine:
Butcherbird?
sbszine:
Snow leopard
sbszine:
Abstract
sbszine:
Penguins
sbszine:
Intercity train