An unmanned Chinese probe will be exploring the moon's far side in 2018. The side that faces away from the earth differs significantly from the familiar face of the moon. So why are the two sides so different?

Too much pollution can pose a health risk to anyone, but whether it is lethal or not mostly depends on the person's underlying health—and economic—status.

As policymakers seek solutions for the ongoing opioid epidemic, it's worth remembering how sensationalist reporting can lead to troubling responses.

Word processing software has not only changed the way we write; it's changed the way we read. It pays to think about what we want from our writing tools.

eDNA is DNA that an animal sloughs off into its environment through feces, shedding, or lost skin. The technology can detect invasive species.

Is Facebook bad for your mental health? Researchers have been studying the profound impact social bonds can have on health since the 1970s.

Sometimes different but related species can reproduce. When two different species successfully mate, the resulting offspring is called a hybrid.

The world tends to forget about the annual ozone hole that appears over Antarctica, though we're facing huge and complex environmental concerns.

What would have been considered a dystopian level of surveillance a mere twenty years ago has now become the norm. Why don't internet users care?

Indonesia has the highest smoking rates in the world. Why? It might have to do with economic liberalization in the 1990s.