The battery is an affordable, safe and reliable way to store energy for a cloudy day.

FORBES: Green Living In America's "Steel City"

"It's a cloudy day in the Sunshine State, " Democratic Rep. John Garamendi of Walnut Grove said Wednesday.

CNN: States hope to cash in on Florida's rejection of rail funds

Also, while silicon solar cells do not need direct sunlight to work, they will collect a lot less energy indoors or on a cloudy day.

FORBES: Magazine Article

We think the results are very respectable, with decent color contrast (filming was on a cloudy day) and no rolling shutter effect (which can often be a problem).

ENGADGET: Veho Muvi HD 'NPNG' Edition action camera impressions (video)

Remember when you were a kid and it's a cloudy day and you lie back in the grass and watch the clouds passing by and changing form and you're trying to see if they're characters or animals or other shapes?

FORBES: Magazine Article

The center court stands were half-empty on a cloudy, mild day for Azarenka's match.

NPR: Sharapova Reaches 4th Round At French Open

It did, however, deliver a brighter picture on the cloudy day we tested.

ENGADGET: Tachyon XC HD helmet camera review