We’re wishing Sir David Attenborough a very happy 99th birthday today! 🎉🥳 Sir David, who has dedicated his life to understanding and conserving our incredible planet, has narrated many of our Natural History Unit productions. 🌍 “An understanding of the natural world is a source of not only great curiosity, but great fulfilment.” ❤️ #SDA #NHU #SirDavidAttenborough