Loneliness grows as we age

Loneliness in adulthood follows a U-shaped pattern: it’s higher in younger and older adulthood, and lowest during middle adulthood, reports a new study that examined nine longitudinal studies from around the world. The study also identified several ris…

E-bike incentives prove to be worth the investment

Electric bicycle rebates have exploded in popularity in North America as transportation planners try to get people out of their cars and into healthier, more climate-friendly alternatives. However, questions remain: Are new cycling habits sustainable? …

The double-fanged adolescence of saber-toothed cats

How did North America’s saber-toothed cats hunt without breaking their unwieldy saber-like canines, which are vulnerable to sideways bending stresses? A paleontologist provides mechanical evidence that during adolescence, when young cats were learning …