The ancient Egyptians didn’t have a zero, so how did they multiply? Try this math trick to manipulate numbers and help students master multiplication.
Decoded Science’s Climate Doctor takes Mother Earth’s temperature. 2017 is shaping up to be the second-warmest year on record.
Earthquake maps are notoriously incomplete, but this week we look at tremors in Chile, Iceland and the US. Oh, and quote some Hamlet.
When you think of carbon, you may think of charcoal, but carbon is much more than just burnt toast. The fast and slow paths of the carbon cycle are critical for life on Earth.
There are various methodologies for chemical separation and purification. Two of these are fractional crystallization and fractional distillation.
Sugarcane is harvested, crushed, the juice collected and converted to raw sugar. Is cane juice crystallization to raw sugar a chemical or a physical change?
Physics, Archimedes’ Principle, helium balloons, and air as a liquid – Dr. Paul Heckert answers a reader question in this new Ask the Expert article.