If you can't put your finger on it, you can at least learn from this video about the channels that form our our water-soaked fingertips. What is their purpose? This little clip is an amusing and educational addition to a lesson on...

Go with the flow! The first video of a seven-part series about the Earth's water resources introduces learners to the water cycle. With an emphasis on cause and effect, it presents the information simply through animation. And, with the...