The Mexican-American artist Ana Teresa Fernández is painting the US-Mexico border fence blue to "erase" it, with the help of 30 volunteers.

But then, few days later, I came across another blue frame mat in the wild. Jenny Komenda, blogger and founder of design firm Juniper Studio, had stuck an illustration with sky blue matting smack ...

So the sky isn't blue, at least not always. It is a glow-in-the-dark night sky too, colored a mix of green, yellow and red.

This abstract night-sky photo shows the full moon peeking through wispy clouds and barren tree branches while surrounded by brilliant, blue lunar corona.

Social media lit up Thursday afternoon with reports of a fireball streaking across the sky. The fireball was spotted along the southeast U.S., including near the border of Virginia and North ...

Filmmaker Ami Horowitz has applauded border states in the US for “one of the greatest pieces of political theatre” he has ever seen. “I thought it was political theatre when they began the ...

The sky looks blue on a sunny day – but at night we can see the faint glow of its true colour.