Presidents Xi Jinping and Vladimir Putin have been caught on a hot mic talking about the potential of medicine to extend human life spans and "perhaps even achieve immortality".

In short:

A live-stream broadcast of China’s military parade has captured Xi Jinping and Vladimir Putin discussing biotechnology’s potential to extend life.

An interpreter translating Mr Putin can be heard saying in Mandarin that human organ transplants could let “us live younger and younger, and perhaps even achieve immortality”.

Mr Xi responded that it may be possible for people to live to 150 years this century.