Sunlight on Earth changes over decades, affecting climate, agriculture, and energy production, including solar power.

Residents in a string of northern states could be in with a chance to see the northern lights on Tuesday night, forecasters ...

A proposed ordinance in Palo Alto looks to lessen the amount of light pollution in the city at night by implementing new regulations on outdoor lighting.

The sun rises each day, but the amount of sunlight reaching Earth’s surface is not as constant as we might think. A new study ...

Astronomy-lovers should head to this incredible stargazing destination in the American West full of Dark Sky locations, ...

"China's logistic cost is 8 per cent, US and ... also shed light on the upcoming road projects that could significantly reduce travel time, therefore aiding in controlling pollution.

I've lived near Joshua Tree National Park in California for almost 20 years and have seen many visitors make the same common ...

Baltimore oriole ready to take off from the northern tip of South America. With healthy feathers and stores of fat, you ...

IndyStar has created a map of flood-prone areas using complaints to the ... reducing both flooding and pollution. Mayor Joe ...