Searching for a cure for rickets led to the discovery of vitamin D. Fortifying foods with vitamin D led to another disease, and a whole new way to view genetic disease in general.

Pupil outcome: I can compare and describe lengths using knowledge of multiplication. Key learning points: - Lengths can be compared using multiplication. - Comparisons of length can be represented as a multiplication equation. - The stem...

Twice a champion with the New York Giants, Osi Umenyiora gives his talking points on how to win Super Bowl 51.

👉 Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative...

👉 Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative...

👉 Learn how to write an algebraic expression from verbal sentence as well as writing out a sentence from a algebraic expression. To do this we need to know what words we use to express operations such as addition, multiplication,...

👉 Learn how to simplify mathematics expressions. A mathematis expression is a finite combination of numbers and symbols formed following a set of operations or rules. To simplify a mathematics expression means to reduce the expression...

👉 Learn how to simplify mathematics expressions. A mathematis expression is a finite combination of numbers and symbols formed following a set of operations or rules. To simplify a mathematics expression means to reduce the expression...

👉 Learn how to simplify mathematics expressions. A mathematis expression is a finite combination of numbers and symbols formed following a set of operations or rules. To simplify a mathematics expression means to reduce the expression...

Thief attempted to rob same bank on 2 consecutive days

INTERVIEW: Elena Roger on being nominated for twice in three years at the Laurence Olivier Awards 2009 at London . (Footage by WireImage Video/GettyImages)

A Third of Cancer Patients Wait to be Referred

CLEAN : Spanish train crash shocked father of

Scissors brushes and blue wax Twice a month beautician Chnoor Khezri takes her equipment to a camp near Mosul and gives displaced Iraqi women who have lost everything a proper pampering and some fresh confidence

Poor children twice as likely to be obese

VOICED : Fabricantes buscan deslumbrar en salon del automovil de Pekin

CLEAN : Brazil deficit much worse than thought: minister

CLEAN : Confirmed death toll in S Korea ferry disaster passes 100

CLEAN : 78 dead in worst Spanish train crash in

VOICED : Cafu: hay que dejar atras el Maracanazo

CLEAN : Cope calls for