Why we still don’t understand sleep, and why it matters

For the first 20 years of his life, Henry Nicholls had a healthy relationship with sleep. Shortly after his 21st birthday, he began to experience symptoms of narcolepsy, a debilitating disorder that’s plagued him ever since. Sleep research is progressing, so why are he and others like him still waiting for a cure?

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How do we choose our friends?

The expression “friends are the family you choose” may be a well worn cliché, but as scientists from the University of California and Yale have discovered, there may be more scientific truth to this statement than previously thought.