It was so rare and spectacular that even former Prime Minister Lee Hsien Loong shared photo of it. Read more at stomp.straitstimes.com ...

Rainbows form when a unique combination of meteorological and atmospheric conditions come together at the perfect time, and ...

Rainbows are actually full circles, but we usually only see an arc because the Earth's surface blocks the bottom half. To view a complete circular rainbow, one must be high in the sky, like in an ...