Archaeologists have unearthed the remains of an ancient fortress built by hunter-gatherers in Siberia's Lower Ob' region.
Authorities in Pittsburgh are investigating a series of incidents involving people wearing orange wristbands.
A seagull nicknamed 'Vinny' was taken to a wildlife hospital after it was found covered in curry sauce.
This spectacular natural phenomenon turns a waterfall of melting snow in to a fiery cascade of bright orange.
Scientists in Australia have been investigating what caused an otherwise normal orange to turn purple.
Astronomers at the European Southern Observatory have photographed a planet forming around a star.
Ski resorts in several countries were left looking like the surface of Mars after a recent fall of orange-tinged snow.
The peculiar aerial phenomenon was captured on camera by Jeremy Le Fevre on Saturday evening.
The alarm was raised in Dubai last week after the water started to turn a disconcerting orange color.
An unidentified witness reported seeing a 'silent camouflage aircraft' over the town a few weeks ago.
Thousands of people turned out last week to throw oranges at one another in the streets of Ivrea.
A video showing a tree burning from the inside out while producing very little smoke has appeared online.
Geologists have been investigating a glowing orange hole that opened up on a Chinese mountain.
An ancient orange star has revealed hints of one of the first stars to ever exist in the universe.
Several witnesses observed the phenomenon in the sky over a rural part of England.