Type 1 diabetes (also known as diabetes mellitus) is an autoimmune disease in which immune cells attack and destroy the insulin-producing cells of the pancreas. The loss of insulin leads to the ...

Size of an interval on a number line Example: fractions on a number line Each of these shapes have been split into two equal parts. Each part is a half. Half is shaded orange and half is unshaded.

Listening to the news can feel like a journey. But 1A guides you beyond the headlines – and cuts through the noise. Let's get to the heart of the story, together – on 1A.