90% of World's Population to See Night-time Tonight

This global “black-out” will occur at 1:26 AM, Indian Standard Time. - Articles from The Weather Channel

Doomsday Clock stays at 90 seconds to midnight

At this exact time every year more than 90% of the world's population are in sunlight - Australian Geographic

The world is 'perilously close' to irreversible climate change. 5 tipping points keep scientists up at night

Nuclear winter' from a US-Russia conflict would wipe out 63% of the world's population

On July 8, 99% of the Earth's Population will be in Sunlight Simultaneously - SnowBrains

Light pollution - Wikipedia

World 'population bomb' may never go off as feared, finds study, Population

Lucky 7 Tips for Aurora Viewing in Fairbanks

Global areas of low human impact ('Low Impact Areas') and fragmentation of the natural world

How Many Stars in the Sky? 9,096—Is That All?

World Population - Behind The News

Grand Canyon Conservancy Protecting the Night Sky