This is when unrelated species evolve to have functionally similar features. All bats and birds "converged" with their ability to fly in response to environmental stimuli and biological goals. The arm ...

W. L. Bynum introduced the weakly convergent sequence coefficient $\operatorname{WCS}(X)$ of the Banach space X as $\operatorname{WCS}(X) = \sup\{M$: for each weakly ...

Only some bats and toothed whales rely on sophisticated echolocation, in which they emit sonar pulses and process returning echoes, to detect and track down small prey. Now, two new studies show that ...