PepsiCo Reaches for Protein and Fiber to Boost Sales of Frito-Lay Snacks

The food giant said its Frito-Lay snack division planned to make a line of Cheetos and Doritos with no artificial colors or flavors, as demand falters.

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Northern Lights May Be Visible as Far South as Alabama

Streaks of colorful light could paint the sky over a large portion of the country on Sunday night into Monday morning amid a severe geomagnetic storm.

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The F.D.A. Has Approved Three ‘Natural’ Food Colorings

Here is what we know about their safety and how they’ll be used.

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SpaceX Launches NASA’s SPHEREx and PUNCH Missions

The SPHEREx telescope will create the most colorful map of the cosmos, while the four satellites of the PUNCH mission track the evolution of the solar wind in three dimensions.

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Stream Near Buenos Aires Turns Red, ‘Like a River Covered in Blood’

A stream south of the Argentine capital turned a freakish vermilion this week, prompting concerns about pollution. Officials said it could be the result of “some type of organic dye.”

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FDA Bans Red Dye 3 in Foods, Linking It to Cancer in Rats

Consumer and food safety groups have long urged the agency to revoke the use of this dye and others. The F.D.A. says there still is no evidence it is a human carcinogenic.

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This Brazilian Velvet Ant Is So Dark That It’s Super-Black

Scientists found that the dark markings on a species of fluffy wasp reflected less than 1 percent of light.

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