Trees don't fit into a species, family or even an order. So do they really exist, scientifically speaking?
Here's a good rule of thumb for how to approach exercise when you're sick, according to a sports medicine doctor.
There aren't any gaseous moons in the solar system, but here's what it would take for one to exist elsewhere.
Russian troops have captured the Chernobyl nuclear power plant, which still contains nuclear waste that could pose a threat to the surrounding area.
Reference A scientific theory is based on careful examination of facts. It is much different from the non-scientific use of the word.
Tigers may be orange, but their prey don't see them that way. Here's why it doesn't matter that these giant cats are brightly colored.
A scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it.
The three-body problem, which has plagued science since the days of Isaac Newton, is closer to being solved, scientists say.
Bizarre quantum objects called Q balls could explain why the universe if filled with matter and ultimately why we exist.