Category: Health / Science

6 questions about dreaming

Adults dream for about two hours a night, on average—that’s one-twelfth of their lives, adding up to more than six years of dreaming during an 80-year life. World literature is filled with dreams. Dreams play...

Calcium, the sixth taste?

Calcium is something of a double-edged sword. Too much of the essential element is as dangerous as too little, either case adversely affecting health in animals from humans to mice to fruit flies. Sensing...

Is olive oil really that special?

In the past 25 years, olive oil has taken on the sta­tus of a health food, initially among those trying to improve their cholesterol lev­els and protect their heart, but then also among people who were...

Largest prime number discovered

At more than 23m digits long, the number is something of a beast. But for mathematicians, the latest discovery from a global gang of enthusiasts is a thing of beauty: the largest prime number...

The truth about hangover remedies

Humans have long sought ways to allay a hangover—that litany of symptoms that come after drinking too much alcohol, including dizziness, nausea, fatigue, confusion, headache, dry mouth, and drowsiness. The Roman naturalist, author, and...

Melibe Viridis

Meet the carnivorous sea slug that uses its huge, gelatinous head as a fishing net to catch its prey, while floating around on 13 leg-like appendages that altogether make it look like the best...