A Curious eastern grey squirrel (Sciurus carolinensis).
Imageplotter Travel/Alamy
New research suggests the gut bacteria of red and grey squirrels differ significantly, potentially explaining the decline of the native red and the success of its grey counterpart.
The Royal Charter was shipwrecked at Porth Alerth near Moelfre on Anglesey.
John Oxley Library, State Library of Queensland
More than 800 lives were lost in the Royal Charter storm but it also led to improvements in weather forecasting.
A halfpenny token issued by the Parys Mining Company of Anglesey in 1788. The hooded druid design was used for many years and was the first of hundreds of token designs.
BrandonBigheart/Wikimedia
A Welsh mining company was the first to issue tokens to workers as an alternative form of payment.