Simplify the following text for a Grade 9 native English-speaking person.
Original: Thomas Heatherwick ( born 17 February 1970 ) is an English designer and artist known for innovative use of engineering and materials in public monuments and sculptures .
Simplified: Thomas Heatherwick ( born 17th February 1970 ) is an English designer and artist . He is known for innovative use of engineering and materials in public monuments and sculptures .