This Week in Science: Cloning Limits, Sperm in Space, And Much More!

A 20-year mouse study hit cloning limits: genetic mutations accumulated after 25 generations, 58th-generation mice were unviable, and re-cloned mice remained healthy except G58.

Human evolution may be driven more by culture and technology than by environment, with culture solving problems faster than genetic evolution.

Drinking two to three cups of coffee per day was linked to lower risks of depression and anxiety; consuming more than five cups raised those risks again, and benefits were higher for men.

CERN transported antimatter by truck for the first time—a 10-km trip that marks a major milestone—and the particles stayed at the same position after the drive.

Experiments are testing sperm in microgravity.