15 April: today's birthdays

• Alice Braga - Brazilian actress
  
• Jedaias Capucho Neves - Brazilian soccer player
• Leonardo da Vinci - Italian painter, engineer and scientist. Considered a polymath, a "universal genius", his most famous works are Mona Lisa, The last Supper, The Vitruvian Man, and Lady with an Ermine
• Georges Descrières - French actor
• Émile Durkheim - French sociologist and philosopher, considered the father of Sociology
• Leonhard Euler - Leonhard Euler was a Swiss mathematician, physicist and astronomer, who was enormously prolific and influential in mathematics in the 18th century. Euler's influence spanned from numerous branches of mathematics to mechanics, astronomy, fluid dynamics and even musical theory.
  The correct pronunciation of Euler's first name, Leonhard is Leh-ohn-hahrd, where the "r" is barely pronounced, similarly to how the "r" is pronounced in a British accent. His name, Euler, is often mispronounced as you-ler or even wheel-er. Fortunately, Euler is actually easy to pronounce. The correct pronunciation of Euler is Oil-ah. It must be noted that while there is an "r" in his name, the resulting sound, in German, is as if it were barely present. Compared to Leonhard, the "r" in Euler is basically silent, so the "er" at the end of his surname produces something similar to an "ah" sound.
• Luke Evans - English actor
  
• Carol W. Greider - American biologist, born Carolyn Widney Greider. She was awarded the 2009 Nobel Prize in Physiology or Medicine, along with ​Jack W. Szostak and Elizabeth Blackburn.
• David Hamilton - English photographer
• Henry James - American writer
  
• Bruno Le Maire - French politician 
• Jean Moréas - Greek-born French poet, writer and art critic
• Miguel Ángel Oca - Spanish water polo player
• Emma Thompson - English actress and screenwriter. She was married to Irish actor and film director Kenneth Branagh
• Tomas Tranströmer - Swedish writer, poet and translator, Nobel Prize in Literature in 2011
• Emma Watson - English actress born in France
• Max Wertheimer - Czech psychologist
• Benjamin Zephaniah - English writer and poet