Roman concrete has stood the test of time, so scientists searched ruins to unlock the ancient recipe that could help architecture and climate change.
XBB.1.5, an offshoot of the coronavirus’s omicron variant, can hide from parts of the immune system, but vaccines and some treatments still work.
High levels of HDL cholesterol don’t appear to protect against heart disease, while harm from low levels may depend on race, a study reports.
Low humidity protects viruses and cold temperatures may blunt some immune responses, making viral infections like colds, flu and COVID-19 more likely.
News that three kinds of fungi are more widespread than previously thought prompted reader questions about risk, symptoms and more. We answer them.
Within five decades, scientists went from sequencing a single gene to sequencing the entire human genome.
Finds from one of the world’s oldest shipwrecks hint that miners in Central Asia and Turkey provided a crucial metal to Mediterranean rulers.
By around 3,100 years ago, Mesoamerican ritual complexes tracked celestial cycles using a 260-day count, a huge lidar mapping project shows.
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient dark soils found in the region.