Have you ever dropped a stick into a river and wondered where it might go if it floated all the way downstream? Now you can trace its journey using Streamer – a new on-line service from the National Atlas of the United States®.
Streamer is an online map service that lets anyone trace downstream along America’s major rivers and streams simply by picking a point on a stream. Streamer will map the route the stream follows. (more…)
COLLEGE PARK, Md. — In a single cave in Ecuador, a species of cavefish has evolved to do something perhaps unique to them, navigate with their teeth.
The sensory use of these teeth, which are not in their mouths, but protrude from their skin, appears to be a previously unknown evolutionary phenomenon, one that may not exist anywhere outside this one cave, say researchers at the University of Maryland, National Institutes of Health and Pontificia Universidad Católica del Ecuador who brought to light this fascinating new adaptation to life in dark, swiftly flowing waters. (more…)
