A careful derivation of the arithmetic properties of the natural numbers ℕ, using induction, was done by G. Peano (1858–1932). It is a lot of fun, but we will not pursue any of it here.

But the perpetual mutability and fleetingness of those immediate objects of sight render them incapable of being managed after the manner of geometrical figures […]

Exposure to iodine can also cause apoptosis in human thyroid cells and thyroid carcinoma cell lines through generation of iodolactones (iodinated derivatives of fatty acids) [ 51, 52 ].

Teo Nie Ching said remove classes were meant to aid students who were not fluent in Malay, which is the medium at national schools.