University Of California, San Francisco

Pregnancy after tubal ligation is more common than previously thought, with 3-5% of U.S. women experiencing unplanned pregnancies post-procedure, suggesting it's less effective than other birth control methods.

Bats can survive with high blood sugar levels lethal to humans, offering insights into diabetes treatment. They've evolved strategies based on diet, with fruit bats lowering blood sugar via insulin and nectar bats tolerating high levels without insulin dependence.

Spending excessive time on screens in early 20s increases heart attack risk, according to a 30-year study of 4,000 young adults. Each additional hour of TV watching at 23 years old raised the odds of heart disease by 26% and heart attacks/strokes by 16%. Screen time habits in young adulthood influence future health risks.