Uncategorized
- Archaeology
Lasers reveal sites used as the Americas’ oldest known star calendars
By around 3,100 years ago, Mesoamerican ritual complexes tracked celestial cycles using a 260-day count, a huge lidar mapping project shows.
- Physics
Tiny bubbles that make icicles hazy are filled with water, not air
Like tree rings, layers of itty-bitty water pockets also preserve a record of an icicle’s growth.
- Microbes
Meet some of the microbes that give cheeses flavor
Knowing which genus of bacteria is responsible for which flavor could open the door to new types of cheese.
- Earth
Indigenous people may have created the Amazon’s ‘dark earth’ on purpose
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns.
