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Beams of light—not cables—are carrying the internet across a river in the Congo
Sep 16, 2021 8:00 PM
Blindingly bright black holes could help cosmologists see deeper into the universe’s past
Sep 16, 2021 7:00 PM
Why a record number of container ships are backed up off the coast of California
Sep 16, 2021 2:00 PM
Featured in puzzles
Jul 22, 2021
The best dog puzzles: Mental stimulation for your pup
The next time your dog is pestering you for a belly rub, or just seems plain ol’ bored, pass him one of the best dog puzzles below—Fido will be entertained...
Sep 25, 2020
The inventor of the Rubik’s cube doesn’t get why it’s so popular
It took Ernő Rubik a full month to solve his own puzzle. Now nearly 50 years later, he’s sitting back and reflecting.
Sep 5, 2020
Can you crack the world’s first crossword?
Try your hand at sudokus, riddles, mazes, and more with this free downloadable puzzle pack.
Aug 19, 2020
This maze has three solutions. Can you solve them all?
Give your brain a wee workout with this puzzle.
Jul 1, 2020
Challenging puzzles and brain teasers for when you’re bored of Sudoku
Pass the time and train your brain.
Jun 19, 2020
These sudoku puzzles only use 1s and 0s. Can you crack them?
There’s only one correct answer for each grid.
Jun 7, 2020
Give your brain a workout with these unique number puzzles
Called “Sums,” they were invented by an engineer.
May 29, 2020
Logic problems to challenge your bored brain
They’ll make the time pass lightning fast.
