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.
Reference The first law of thermodynamics states that energy cannot be created or destroyed, but it can be transferred from one location to another and converted to and from other forms of energy.
Russian troops have captured the Chernobyl nuclear power plant, which still contains nuclear waste that could pose a threat to the surrounding area.
Reference Faraday’s law of induction describes how an electric current produces a magnetic field and, conversely, how a changing magnetic field generates an electric current in a conductor.
Reference The Second Law of Thermodynamics says, in simple terms, entropy always increases. This principle explains, for example, why you can't unscramble an egg.
Reference Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy.
Reference According to the third law of thermodynamics, the entropy of a perfect crystal is zero when the temperature of the crystal is equal to absolute zero (0 kelvin).
Reference The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.
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.