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 ...

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 ...

If the clouds part Tuesday night, some Oregonians might have a chance to experience the northern lights. The “view line” for Tuesday’s aurora forecast dips down into the northeast tip of Oregon, ...

The past two weeks were almost entirely cloudy. Behind the clouds, we missed many beautiful events involving the moon, ...

"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 ...

Aurora could be seen in the night sky as a severe geomagnetic storm erupts over Earth. Here are the best places to see the ...

The Montana Department of Environmental Quality has rejected a petition filed by two river advocacy groups seeking an impairment designation for the Big Hole River tied to nutrients pollution.

The study reveals that species in nature rely on invisible signals like smells, sounds, and visual cues to interact and ...