For the first time, a study shows an online assessment can provide a scientific measure of acetylcholine – a key brain chemical, which declines progressively with cognitive aging and even more quickly ...

The humble planarian flatworm can regrow its brain. Here’s how this tiny animal will have you rethinking everything you ...

All our brain-teasers in one place. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. So, you're some kind of PC gaming expert, are you? Then ...

You can play the giant crossword online below. To play at home, print off the PDFs below or pick up the Saturday, Dec. 20 ...

A trending brain puzzle has users scrambling to rearrange the digits 2, 4, 6, and 9, aiming for a number as close to 5000 as ...

Trump gets a lot of things wrong when he talks about cognitive tests. He recently bragged to journalists that he “aced” one, and said the doctors at Walter Reed told him no president had taken a ...

The best toys do more than entertain—they support brain development, problem-solving, emotional growth, and meaningful ...

A peaceful riverbed scene is turning into a major challenge for puzzle masters everywhere. Hidden inside this picture is a ...

Spot the difference puzzles test your observation skills and focus. Think you have exceptional visual acuity? Go ahead and ...

A minority of people have hyperthymesia, or highly superior autobiographical memory, so they can remember events in their ...

Jake Schneider, an ALS patient, was able to reconnect with the world through Neuralink, a brain-computer interface device ...

The Copenhagen Test is a tense and intellectually driven series that explores the hidden world of intelligence operations and ethical decision-making.