Most solar panels pay off in seven to 12 years. Geographic location, government incentives and your household’s electricity usage impact how quickly your solar investment will break even. Maximize ...

The sun may rise every morning, but the amount of sunlight reaching Earth's surface can substantially vary over decades, according to a perspective article led by an international research team.

Researchers tested whether introducing light into the bedroom before waking would improve morning wakefulness and found an amount of time that seems to help fight off fatigue and raise alertness most.

Before Einstein, special relativity, and E = mc2, what was the prevailing theory on the Sun's seemingly eternal energy?

Pushing the limits of structured light, applied physicists report a new type of optical vortex beam that not only twists as it travels but also changes in different parts at different rates to create ...

The development centers on thin films of a specific titanium oxide phase, Ti₄O₇, and could lead to advances in areas ranging ...

One part of this plan would require increasing the planet’s atmospheric pressure, and one scientist suggests that capturing ...

The length of the string, number of bulbs, and spacing between bulbs vary, as does the ... outdoor solar lighting. Direct sunlight isn’t always a must for solar lights to work, but it certainly ...

After trying the camera with HomeKit, I kept the device with the rest of our Eufy security cameras and alarm system in the ...