A Nobel Prize-winning scientist who left Sussex University for America two years ago because of a lack of funding for his department, is coming home.

The chemist Sir Harry Kroto is to return to the renowned chemistry department on a part-time basis. The department was saved from closure in May following national opposition.

The threat of closure prompted Sir Harry to threaten to return his honorary degree, a threat he carried out at Exeter and Hertfordshire universities when they axed chemistry.

Gerry Lawless, head of chemistry at Sussex, said: "It is amazing really. One minute we were facing closure and the next we are advertising four new posts, welcoming Harry back and increasing our student numbers."

Sir Harry went to work for Florida State University in 2004. He received the Nobel Prize for Chemistry in 1996 for his work in discovering the C60 molecule, a new form of carbon.