Science: The Chicken & the Egg

> Hens lay 15 to 20% more eggs when they live on a 26-hour day (14 hours of light, alternating with twelve of darkness) in artificially illuminated henhouses, report scientists : Rutgers University and the University of Maryland. Reason: hens feel an urge to lay eggs at 26-hour intervals—at 8 a.m. one day, 10 a.m. the next, etc.—and in an ordinary 24-hour day the time to lay eventually comes when they are asleep.

> The wondrous sulfa drugs are now being used against animal diseases. Sulfanilamide cures fowl pneumonia and several eye infections, reports...

Want the full story?

Subscribe Now


Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!