What’s hot in science and engineering? Research news for the day of April 21, 2022

U.S. National Science Foundation-grantee researchers at Brown University used virtual reality to develop a new model that predicts human movement and motion in a crowd. The team’s model successfully predicted individual trajectories in virtual crowd experiments and when using real-life crowd data. The findings were …

Helium-3, a rare isotope of helium gas, is leaking out of Earth’s core, according to a new study. Because almost all helium-3 is from the Big Bang, the gas leak adds evidence that Earth formed inside a solar nebula, a question …