Crick institute opens its doors to the public

It’s now 64 years since British scientist Francis Crick discovered the shape of human DNA – the famous double helix – and revolutionised the world of biology.

Last year, the largest medical research unit opened in Europe was named in his honour.

It’s now opening its doors to the public for a special exhibition that runs until October 28.

Al Jazeera’s Jessica Baldwin reports from London.