Russia’s invasion could cause long-term harm to Ukraine’s prized soil
By now, wheat planted late last year waves in fields across Ukraine. Spring crops of sunflowers and barley are turning swaths of dark earth into…
Day: June 21, 2022
How fast a row of dominoes topples depends on friction
It may seem like fun and games, but understanding how dominoes topple isn’t child’s play. “It’s a problem that is so natural; everybody plays with…