But as beautiful as it is, Grand Canyon Adventure: River at Risk 3D is also serious. Suffering from a mega-drought that scientists fear will last into the next century, the Colorado has significantly lower water levels every year, endangering not only the river but the seven states that rely on it for water. (Those lower water levels cause more white-water rapids, thrilling thousands of adventure seekers who are unaware that the increase in rapids is actually a sign that somethings very wrong.)
Narrated by Robert Redford, who is well known as an environmental advocate, with rousing music by the Dave Matthews Band, Grand Canyon Adventure: River at Risk 3D. Through August 18. Houston Museum of Natural Science, One Hermann Circle Drive. For tickets and information, call 713-639-4629 or visit www.hmns.org. $6 to $10.
May 30-Aug. 18, 12, 3 & 6 p.m., 2008