Centuries ago, maps weren’t just tools,they were stories, shaped as much by imagination as exploration. Among the most ...

Te K’ab Chaak was the first dynastic leader of the Maya region of Caracol. Even after the king died, his dynasty last another ...

To celebrate Scientific American’s 180th anniversary, we’re publishing a jigsaw every weekday to show off some of our most fascinating magazine covers over the years. We’d love to hear from ...

Solve the grid in this easy Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat any entry in ...

Piece together stunning science images with this jigsaw puzzle. Play now.

A classic puzzle conundrum goes like this: You’re in a room with two ropes and a box of matches. Each rope takes exactly an hour to burn all the way across, but it might burn faster through some ...

Surprising new work bucks 50 years of assumptions about the trade-offs between computation space and time ...

And have you read a recent peer-reviewed paper that you would like to write about for Mind Matters? Please send suggestions to Scientific American ’s Mind Matters editor Daisy Yuhas dyuhas@sciam ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is ...

Can you crack Killer Sudoku's mathematical twist? The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. In Killer Sudoku, the digits in each ...

A rapidly warming Arctic is driving long-lasting summer extremes, such as this month’s sweltering temperatures, new research suggests ...

Will calculating pi on the moon enable any novel insight or scientific discovery? No. But according to Parker, that’s part of the point.