The huge fish are dwindling in the wild, but thriving in private homes. Scientists see an opportunity for their recovery. In Thailand, some threatened megafish, like this giant barb photographed at ...

I didn’t anticipate starting the day by accidentally slapping a jellyfish. Yet it’s hard to maintain a personal sense of space underwater when surrounded by dozens of these pastel-pink, deceptively ...

On assignment in northern Thailand, National Geographic photographer Rena Effendi follows Miss Wisa, a farmer leading her community toward a more resilient and sustainable food future. Miss Wisa uses ...