Prime numbers are the ones that have only two factors: 1 and itself. Credit: Ssindhwani / Wikimedia Commons Prime numbers are those divisible only by themselves and by one. Despite their apparent ...

Are you ready to put your pattern-spotting, logic, and IQ to the test? In this challenge, we’ll twist numbers, letters, and ...

Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." Sunflowers are ...

The Plant Cell, Vol. 6, No. 12 (Dec., 1994), pp. 1877-1887 (11 pages) The homeobox of the knotted1 (kn1) gene was used to isolate 12 related sequences in maize. The homeodomains encoded by the ...

A tricky brainteaser is likely to put even the sharpest of eyes to the test. Online bingo experts at tombola have crafted a tough brainteaser that only one in four can solve. The aim of the ...

TEST your IQ to the max with this tricky brainteaser, that will have you scratching your head trying to solve it. If you can spot the odd one out number sequence in just 40 seconds, you have the eyes ...