Washington University: P H Buffers in the Blood

Ancient texts, like Homer's Odyssey, mentions navigating ships by observing constellations. Pupils learn about the link between history and astronomy as they relate to navigation in the Bronze Age. Scholars complete two hands-on...

The best learning environment is a safe learning environment. Remind young scientists about safety rules and regulations in the science lab, the classroom, and the field.

Imagine having to give up cell phones, computers, and TV? What would be lost? What gained? An examination of the Drokpa, a nomadic people who live in the grasslands of Tibet, provides class members an opportunity to consider how access...

Water vapor released by trees in the Amazon creates a floating river. In fact, it's the largest river on Earth! A video presentation examines the science behind the water vapor and explains how rains seeds form to create clouds.

What happens in the Arctic doesn't always stay in the Arctic. Follow along with this short video as it investigates how small changes in the temperature of Arctic regions can have dramatic effects on the global climate through a series...

Swirling and churning, the waters of the North Atlantic play a vital role in Earth's climate! Discover the many factors that produce circulation using a multimedia lesson from PBS's Weather and Climate series for high schoolers. Scholars...

There are so many galaxies in the universe that the vast majority of them are too distant for the human eye to perceive. An astronomy video discusses the Hubble Telescope's Deep Field image from 1995 and the eXtreme Deep Field image...

Ever wonder what the villi in the small intestine do? I bet your class would love to find out. Mesh netting is used to represent small blood vessels on the outside of the intestine, and a chenille bath mat is used to represent the villi...

Explains what a buffer is, how it is prepared, how it works to resist drastic changes in pH, and the characteristics of an effective buffer. Human blood also contains a buffer which is crucial for maintaining the blood's pH.

Imagine what life might be like in a different galaxy. That's the challenge young scientists take on in a warm-up activity designed to prepare them for a close reading of Ruth Stone's poem "In the Next Galaxy." After class members share...