captivity

Adam was released after hours of interrogation, but he said many others remain in captivity.

Some suffered through years of cruel captivity in North Vietnamese prisoner camps, since Hanoi refused to release them until Nixon and Kissinger withdrew the last American troops.

Comparing zoo and wild data showed that while the differences were smaller in captivity, they rarely disappeared altogether.

Otter 841 was born in captivity to a mother who had been captured after spending too much time interacting with people and their watercraft.

"It's impossible to forget even a single moment of my captivity," the 53-year-old Israeli former hostage told AFP in an interview on Monday.