The term "blind as a bat" is not only wrong, it is a complete contradiction, since few creatures see as well as bats. Their use of both sound and vision to locate objects gives them a wide advantage over other nocturnal flying predators.

The American Medical Association warned against extended exposure to artificial light, following a University of Haifa research that links over-exposure to cancer. Other related health effects include exacerbating sleep disorders.

Scientists in Israel have found a novel way to get images through scattering materials, such as frosted glass or skin. The researchers hope the new method could play a significant role in medical imaging.

A new study suggests that light at night, specifically in the bedroom, increases the risk for breast cancer. The finding comes from an Israeli case–control study of 1679 women, concluding that the intensity of bedroom light is the strongest predictor of breast cancer.