NPR's Juana Summers talks with Regina Barber and Emily Kwong of Short Wave about "scuba-diving" lizards, a trick to turn a mouse's skin transparent and whether finger counting helps kids' math skills.

Preschool teachers have different views on finger counting. Some teachers consider finger counting use in children to signal that they are struggling with math, while others associate its use as ...

Brain teasers have firmly secured their place as one of the most popular pastimes on the internet. People love these quirky, challenging puzzles that often leave you scratching your head in confusion.