Mary Anning was a British fossil-hunter born on 21st May 1799 in Dorset, UK. Her family was very poor, so she didn’t go to school. Instead, Mary learned to read, write and draw by herself. She enjoyed walking along the coast and searching for seashells and fossils with her brother and her dog. When she was 12, Mary and her brother discovered a prehistoric sea creature –an ichthyosaur. She also discovered other creatures, such as a plesiosaur and a dimorphodon. Her amazing discoveries helped scientists and historians around the world learn about the past. However, Mary Anning didn’t become famous until after she died on 9th March 1847. Ada Lovelace was a British mathematician. She was born in London, UK on 10th December 1815 and was the daughter of the famous poet, Lord Byron. Lovelace studied Mathematics and Science as a child. She later wrote the first programs for computers. However, people didn’t recognise her work at the time. Lovelace died on 27th November 1852. Today, people call her the world’s first computer programmer and some computer programs still use her work. In fact, countries around the world celebrate Ada Lovelace Day in October every year!