Binoculars can be used to look into space. There are reasons why we don't use them.
Drug-resistant diseases continue to increase, and now include fungal infections that pose serious risks.
Four important questions about the Paris climate agreement and U.S. involvement.
Most people won't walk away from a beautiful place - even when risks are known.
U.S. President Donald Trump regularly violates long-standing social and political norms.
The federal government is taking a hands-off approach to "net neutrality" - now cities and states are stepping in to ensure access.
Sweaty feet and certain cheeses have something in common that makes them reek - can you guess what it is?
Humans are drawn to foods with certain components - and pizza has them all.
Talk of bioterrorism might provoke fears of smallpox and anthrax, but mundane threats like salmonella may pose greater danger. And experts say that the U.S. is not prepared for an attack.