Morning Mail: voters call for social media age limit, Mexico cheers first female president, De Minaur marches on

More than two-thirds of voters back a higher age limit for social media, the Guardian Essential poll shows today. Photograph: Yui Mok/PA

Morning, everyone. Voters want tougher rules on the use of social media, our latest Guardian Essential poll shows today, with more than two-thirds in favour of lifting the age limit from 13 to 16. We’ve got all the details, plus how speechwriting turns out to be very lucrative, the amazing secrets of a museum to a pioneering dentist, and it’s been an outstanding night for Alex de Minaur in the French Open.

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