Urban light pollution is a danger for marine ecosystems

Cities are artificially lit to allow humans to make use of the night. This light pollution means that stars are often barely visible in urban skies. But reduced stargazing is not the only impact of artificial light at night.

New holographic camera sees the unseen with high precision

Northwestern University researchers have invented a new high-resolution camera that can see the unseen—including around corners and through scattering media, such as skin, fog or potentially even the human skull.

Detecting inequality from space

Scientists from Wageningen, Utrecht and Nanjing University found a way to estimate income inequality from nighttime light emissions. So-far inequality could only be estimated reliably for a limited group of countries and ...

page 1 from 5