Hybrid rocket engines are rare, but a clever technique could make them more common.
Toymakers once made models by hand, but 3-D printing has changed all that.
The belief that a baseball can be hit further with a corked bat is wrong. But these illegal bats may still give an unfair advantage.
A scale model is further proof that beamed-energy propulsion works.
The first quantum memory that stores and releases entanglement has been built by researchers in Switzerland.
A new cosmology successfully explains the accelerating expansion of the universe without dark energy; but only if the universe has no beginning and no end.
A soft, flexible fiber with a 1000 times more capacitance than a co-axial cable could lead to smarter textiles, say its inventors.
Researchers demonstrate that high-energy electrons lost in conventional solar cells can be captured.
Liquid mirrors are cheaper and easier to make than glass ones. A new prototype shows how they can also make adaptive optics systems.
The world's elite microrobots break the world record in the two-millimeter dash and self-assemble like Voltron.