A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with random lengths between 0 and 1, what are the chances that no three of ...

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 ...

Today’s challenging puzzle is to find the missing number in a sequence of numbers from 1 to 53. So, if you think you're a genius with an IQ level of 140 or higher, then find the missing number in just ...

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 brain teaser is like a fun little challenge for your mind. It’s a puzzle or riddle which is designed to make you think creatively and critically, often in ways you’re not used to. At first glance, a ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 87, No. 2 (1990), pp. 826-830 (5 pages) We have developed a method for rapidly finding patterns of conserved amino ...

Recent advances in next-generation sequencing (NGS) make it possible to directly sequence genomes and exomes of individuals with Mendelian diseases and screen sequence data for causal variants. With ...

Astronomers are intrigued by a strange series of pulses detected from 3I/ATLAS, an interstellar object in our Solar System.