- Sea urchins have teeth made of calcite, which they use to grind down rock also made of calcite -- but their teeth are undamaged. Researchers used high-resolution x-ray analysis to determine why this is.
- Mathematicians say they've created a formula that measures the shape of initial surface waves in order to predict the size and force of tsunamis.
- Even arctic reindeer herders are in on the technology action, using satellite-based snow maps to determine the best foraging spots for their animals -- which is especially valuable as temperature increases affect ice cover on pastures.
MacOS Catalina offers new ways to watch and listen to content. Here’s how to take advantage of them.