Presidential debate, far-right French women, anti-COVID gene Your World Tonight

President Joe Biden and challenger Donald Trump head to the debate stage. The race is close, and the stakes are high. And: Polls suggest support for the far-right RN party in France is coming mostly from women. We’ll look at why, ahead of Sunday’s first round of voting in the national election. Plus: Some people never get COVID, and the reason has been a mystery - until now. Researchers in the UK say a specific gene helps destroy the virus in their bodies before they can get sick.