Have you ever seen someone in their 40s who looks like they are in their 50s? Sometimes, it's not just about genetics, it's about lifestyle.

Ma­jor world lead­ers are meet­ing for an AI sum­mit in Paris, where chal­leng­ing diplo­mat­ic talks are ex­pect­ed as tech ti­tans fight for dom­i­nance in the fast-mov­ing tech­nol­o­gy in­dus­try.