Are the fundamental constants really constant? Recent investigations have shown that one essential fundamental constant -- namely the mass ratio of protons to electrons -- can have changed only by a ...

Everybody knows the value of pi is 3.14…er, something, but how many people know where the ratio came from? Actually, the ratio came from nature—it’s the ratio between the circumference of a circle and ...

An approximately constant ratio of number of predator species/number of prey species is observed in several natural communities, although the exact value of the ratio may vary with habitat and the ...

ON Mr. Julian Huxley's very interesting results as to the fiddler-crab (NATURE, December 20, p. 895), I suggested at Cambridge that in his equation if we are to rationalise the index, comes nearer to ...