Ritsuko Kawai

Researchers in Japan pioneered reprogrammed cells 20 years ago. Now the country has given the first-ever authorizations to manufacture and sell medical products based on the technology.

Researchers have succeeded in developing the smallest fully autonomous robot in history. It measures less than 1 millimeter and can swim underwater for months powered only by light.

A research team has successfully imaged a nova in high resolution—and the images suggest that the nova was not a single, impulsive explosion.