At 103, Howard Tucker is the world’s oldest practicing doctor. He answered these burning questions from Nat Geo readers.

Emerging in monasteries and convents, apothecaries were later incorporated into guilds to serve the general public. But the ...

With mind and body closely connected, there are techniques that everyone can learn to manage the physical and emotional ...

They enthralled sailors. They inspired Darwin. Then, by the mid 19th-century, the iconic Floreana tortoise was gone. Here’s how a group of persistent scientists unlocked the secrets to bringing them ...