extraterrestrials detecting earth

Aliens: could light and noise from Earth attract attention from outer space?

Aliens: could light and noise from Earth attract attention from outer space?

Since the first use of electric lamps in the 19th century, society hasn’t looked back. Homes and streets are lit at all hours so that people can go about their business when they’d once have been asleep. Besides the obvious benefits to societies and the economy, there’s growing awareness of the negative impact of artificial light.