The Secretly Speedy Life Of Plants
Plants have a reputation for staying put. But some plants are moving so quickly, we can’t see their motions.
Best Bubbles
Astronauts are allowed to bring special “crew preference” items when they go up in space. NASA astronaut Don Pettit chose candy corn for his five and a half month stint aboard the International Space Station. But these candy corn were more than a snack; Pettit used them for experimentation.
Testing The Waters
Think oysters are good on the half shell? They may be even better whole. Oysters can restore marine habitats by cleaning water, creating homes for other sea life and preventing coastal erosion. But oyster populations around the world have declined, experts say. Find out how scientists in New York are working to replenish oyster populations in the waters around the city.
Capturing Carbon Dioxide
Basalt formations off the East Coast of the U.S. could hold a billion of tons of carbon dioxide, according to a new study in the Proceedings of the National Academy of Sciences. Paul Olsen, of Columbia University’s Lamont-Doherty Earth Observatory, takes us to a basalt quarry in New Jersey and explains what makes the rock ideal for soaking up emissions. Note: Another Teachers TalkingScience lesson, Sublime Sublimation, makes an excellent introduction to Capturing Carbon Dioxide, and to carbon dioxide itself.
Sublime Sublimation
Looking for ways to jazz up your party? Patrick Buckley, co-author of The Hungry Scientist Handbook, demonstrates how to make carbonated fruit. Materials required: fruit (the firmer the better), a pressure cooker and a handful of dry ice cubes. Note: This lesson provides a great introduction to another Teachers TalkingScience lesson, Capturing Carbon Dioxide.
Can Underwater Parks Protect Coral?
With global threats like ocean warming and acidification, it’s a tough time to be a coral.
How Jane Goodall Got Her Start
Ira talks with primatologist Jane Goodall, 50 years after her first encounters with the chimpanzees of the Gombe.
Gassy Microbes
Some microbes produce different types of gases as a byproduct of their metabolic processes. The microbes in this Science Friday Video released an odorless and flammable gas called methane. The type of gas or gases released by a microbe depends on the species and their metabolic characteristics. In this activity, students will conduct an experiment to observe the metabolic process of yeast by using household ingredients. Students will vary conditions in the yeast’s surrounding environment and observe the amount of gas that the yeast releases
What is Nanotechnology?
Nanotechnology is the study of what happens when things get very, very small – only a few atoms in size. The word “nanometer” means one billionth of a meter, perhaps five or six atoms long. At the nanoscale, materials can have very different physical or chemical properties, even though they are the same. In particular, super thin films of material, only a few nanometers thick, can cause interference within light reflecting off them, resulting in beautiful displays of colors.
Sound Science
Sound is all around us. Everything we hear in our day-to-day lives has a distinctive sound, from the jingling of keys to the tapping of footsteps in a hallway. Sound is created when objects vibrate. These vibrations cause the air around them to vibrate, sending sound waves in various directions. Some objects tend to vibrate at a specific rate. This is known as their resonant frequency. In this activity, students will explore the vibrating nature of sound and how it travels from molecule to molecule.