The Duchess of Cambridge will be inspecting fossils, shells, and even dinosaur teeth a little later when she visits the Natural History Museum.
On display will be artefacts from millions of years ago. The collection also includes the skull of a lion who once lived at the Tower of London.
The museum has picked out its 22 most treasured possessions for the exhibition.
More top news
Official readings are recorded three metres in the air but a study found levels of nitrogen dioxide (NO2) were higher at pushchair level.
Tubes, trains, trams, buses, cable cars, river buses, taxis and going by foot - your guide to getting around during the strike.
Union officials rejected a revised offer from Underground managers during a meeting at the conciliation service ACAS this afternoon.