Aluminum, the tin foil
Some still call it “tin foil” – but since the early 1900s your kitchen foil has been made of aluminum. Things about aluminum Aluminum is […]
Aluminum, the tin foil Continue reading »
Some still call it “tin foil” – but since the early 1900s your kitchen foil has been made of aluminum. Things about aluminum Aluminum is […]
Aluminum, the tin foil Continue reading »
We recently recorded this question. Melissa: Hi, my name is Melissa and I’m from Chicago, Illinois, and my question is: if I’m living in California
The Same Moon Continue reading »
Quakes here on Earth are unpredictable. But some moonquakes are predictable. About a hundred places on the moon are sites of repeated quakes. A question
The various kinds of moonquakes Continue reading »
One warning that a serious storm or a tornado is approaching comes from the color of the sky. A reader’s question about changes in sky
Why does the sky turn a strange color before a tornado? Continue reading »
Natural wetlands in the upper U.S. and Canada – known as prairie potholes. These natural depressions formed thousands of years ago by glaciers that scraped
Prairie Potholes – natural depressions formed by glaciers Continue reading »
Even when temperatures are below freezing, molecules in motion stay in motion. But at a certain temperature, all motion stops. A friend asks, “How close
Absolute Zero Continue reading »
In 2000, we talked to oceanographer Jamie Morison of the University of Washington about a five-year climate study at the North Pole. An update on his progress
Creeping Atlantic Continue reading »
If you step outside at night from a bright room, you won’t see many stars at first. It takes up to 30 minutes for your
Seeing Stars Continue reading »