Jen Christensen

(CNN) — Vaping has an immediate effect on how well the user's blood vessels work, even if the e-cigarette doesn't contain nicotine, according to new research.

The right of transgender minors to access gender-affirming care has sparked debate in many parts of the United States, and it’s now heading to the US Supreme Court.

(CNN) — The right of transgender minors to access gender-affirming care has sparked debate in many parts of the United States, and it's now heading to the US Supreme Court.

By Jen Christensen, CNN The U.S. Environmental Protection Agency on Monday banned the use of two ubiquitous cancer-causing solvents that

EPA bans TCE and PCE, cancer-causing solvents, from use in manufacturing and dry cleaning. Safer alternatives exist, says EPA.

The U.S. Environmental Protection Agency on Monday banned the use of two ubiquitous cancer-causing solvents that activists have been targeting for decades.

The U.S. Environmental Protection Agency on Monday banned the use of two ubiquitous cancer-causing solvents that activists have been targeting for decades.

The U.S. Environmental Protection Agency on Monday banned the use of two ubiquitous cancer-causing solvents that activists have been targeting for decades.

The U.S. Environmental Protection Agency on Monday banned the use of two ubiquitous cancer-causing solvents that activists have been targeting for decades.

(CNN) — Towana Looney is the only person in the world living with a functional pig kidney. But her doctor predicts that in less than a decade, pig-to-human organ transplants like hers could become routine.