Free software is software you can study, modify and share without restriction. But unlike proprietary software, there is no big budget marketing campaign behind it. Rather, people discover it and come ...

(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful ...

Recognizing math patterns is an essential executive functioning skill that is often taken for granted. Math pattern worksheets are one way to practice this, but you can also talk about patterns you ...