How Water Freezes (and Why It Matters) Ice—Simple Yet Strange Ever wondered why ice cubes float or why sidewalks become slippery when they’re covered in frost? Ice might seem ordinary, but it’s packed with fascinating mysteries. In our recent post, we introduced Isabel Pulido’s groundbreaking invention, NanoFreeze, which uses special proteins to freeze water at… Continue reading Ice is Cool!
Tag: science
The Parade of Planets:
A Guide to this Upcoming Celestial Event Looking out my window one recent night, I noticed the crescent moon with three other bright points of light trailing in an arc. I had often seen Venus and, less often, Mars and Jupiter. I hadn’t noted that arc before, though I must have seen it. What was… Continue reading The Parade of Planets:
Goodbye Moon?
“Some say the world will end in fire…” —Robert Frost As we prepare for a spectacular eclipse on April 8, 2024, we can reflect on a cosmic question. Are we losing our moon? Although the moon seems constant in its orbit about 384,000 km from earth, it is moving slowly away. Each year the moon… Continue reading Goodbye Moon?
A Trigonometry Proof of the Pythagorean Theorem?
Impossible? Not for Them! Calcea Johnson and Ne’Kiya Jackson, two high school students from New Orleans, astonished mathematicians by proving the Pythagorean theorem using trigonometry. Many mathematicians thought a trigonometric proof of this foundational theorem of geometry was not possible without using circular reasoning. Jackson and Johnson, however, created one. The Pythagorean theorem, a cornerstone… Continue reading A Trigonometry Proof of the Pythagorean Theorem?