Opinion

Opinion An astrobiologist explains how alien life could exist and we wouldn't notice it.

Opinion Accumulating evidence suggests artificial sweeteners, like those in diet sodas, may alter metabolic processes in the body and mess with your health.

Opinion Alien life is out there, but our current theories seem to be steering us away from it, says this scientist.

Opinion

Opinion It’s that time of year when people make their New Year’s resolutions – indeed, 93% of people set them, according to the American Psychological Association.

Opinion Christmas and New Year's are days of celebration in many parts of the world when people gather with family and friends. One thing many typically don't celebrate on those days is a birthday.

Opinion For all Crisco's popularity, what exactly is that thick, white substance in the can? If you don't know, you're not alone. Here's why.

Opinion Explaining how something as complex as consciousness can emerge from a grey, jelly-like lump of tissue in the head is arguably the greatest scientific challenge of our time.

Opinion The Earth may be entering an era in which natural and human-generated fire together are reshaping the planet.

Opinion Astronomers have just observed a ghostly nebula of gas resembling the shape of an hourglass, surrounding a known galaxy. This ghoulish structure has dwarfed the galaxy it is surrounding.