Learn about your dog's limits physically, take the heat into consideration, and have a time limit for your hike. If their tongue is hanging out of their mouth more than half way, it's a sign to stop and take a rest.
Perhaps more than any other group, athletes have fully embraced sleep as a performance enhancement tool. Top athletes are, of course, all about results. So there's no better place than the world of sports to see the tangible effects of sleep (including pre-game naps) on performance.
Anthropocentrism -- putting humans first and acting as if we're the only beings who count -- is a bad lesson for youngsters who will inherit the messes we leave. A more humble, right-minded, and less anthropocentric position argues for valuing and conserving nature because of its intrinsic value.
Call it an affinity, or a closeness--but whether it's the sawtooth ridges of the Grand Tetons or the cliff faces of Dinosaur National Monument, sooner or later something will grab you and refuse to let go.
Vaccinations protect the human species against diseases for which there is no cure once the infection occurs. In this respect, vaccines become the cure for certain diseases through prevention, whereas we usually think of being cured as what doctors do to us after we get sick.
I figured the series would run for one season and then be pulled in favor of something else that would be less brutal and more in line with good conservation practices.