Many people enjoy lighting candles, incense and fireplaces in their homes to evoke the moods associated with these festive fragrances.  Burning scented products may create a cozy ambiance, and in the case of fireplaces, provide light and heat, but some experts want people to consider how doing so contributes to the quality of the air indoors.  All flames release chemicals that may cause allergy-like symptoms or contribute to long-term respiratory problems if they are inhaled in sufficient quanti

Like many holiday traditions, lighting candles and fireplaces is best done in moderation

A SpaceX Falcon 9 rocket carrying 27 Starlink satellites lifted off from Vandenberg Space Force Base in California on Sunday, Dec. 14, 2025. The first stage then made the company's 550th landing.

Falcon 9 rocket launches Starlink satellites before making 550th SpaceX landing (video)

Assuming Google does manage to launch a prototype in 2027, will it simply be a high-stakes technical experiment – or the dawning of a new era?

Data centers in space: Will 2027 really be the year AI goes to orbit?

December's faint Ursid meteor shower returns under dark skies, offering a small chance of unexpected activity.

December's overlooked meteor shower peaks next week — will the Ursids surprise us?

An overwhelming majority of U.S. adults are satisfied with their health insurance coverage overall, including most older Americans and those on Medicare and Medicaid, according to a new NBC News Decision Desk Poll powered by SurveyMonkey

Poll: Most are satisfied with their health insurance, but a quarter report denials or delays

King Charles shares an update about his cancer treatment.

King Charles shares cancer treatment update, says it's a 'personal blessing'

Denny's diner chain is closing many of its stores around the United States.

Denny's is shutting down restaurants around the country. What's behind the closures?

Architect Frank O. Gehry, who designed unique buildings across the globe, has died.

Architect Frank Gehry has died: See his most iconic buildings

The Baja Blast pie from Taco Bell arrived at the fast food chain on Thursday.

Taco Bell debuts its Baja Blast pie, and the reactions may surprise you

Former Twitter CEO Jack Dorsey created a new app called diVine after shutting down Vine in 2017.

What to know about Jack Dorsey's new Vine revival, DiVine

Customers send their telescopes to Starfront Observatories, where amateur stargazers can view the night sky unencumbered by artificial light.

News

King Charles shares cancer treatment update, says it's a 'personal blessing'

Denny's is shutting down restaurants around the country. What's behind the closures?

Architect Frank Gehry has died: See his most iconic buildings

Taco Bell debuts its Baja Blast pie, and the reactions may surprise you

What to know about Jack Dorsey's new Vine revival, DiVine

Starfront Observatories: A haven for distant stargazers