Top 5

You use Google Maps every day without knowing the elegant graph theory making it work. Veritasium makes Dijkstra's algorithm feel like a thriller.

Born before Shakespeare, still swimming. Scientists finally decoded the DNA repair mechanisms that let Greenland sharks live 500 years.

99% of chemicals in your food were never approved by the FDA. A 1958 loophole let companies add them in secret, and nobody fixed it.

A Guardian investigation follows $1bn in Balkans energy deals from a Sarajevo backstreet to Trump's inner circle. Names, contracts, receipts.

Taiwan's passport used to say 'Republic of China.' Vox traces seven decades of identity crisis through one small booklet.