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If you see someone today wearing a fluorescent tie, a garish sport coat or some cartoonish combination of the two, there are two possible explanations.

A Colorado startup wants to build supersonic passenger planes faster than Concorde but with fares a quarter of the price -- and Virgin Galactic has just got on board.

With supplies of lethal injection drugs running low and new sources increasingly difficult to come by, states are grappling with alternatives. Virginia is the latest.

It all depends on what you do for a living.

Barack Obama is the first U.S. President to visit Cuba since 1928.

Nearly two dozen kids -- ages 8½ to 19 -- appeared in federal court here on Wednesday morning. They wore nose rings and braces. Suits too big in the shoulders. Some doodled, others took copious notes. The backs of some heads barely peeked above the courtroom's wooden benches. But these plaintiffs, however young and small, united behind a massive cause that should inspire any of us old folk: They're suing the U.S. government -- and President Barack Obama -- for failing to act rapidly to stop climate change.

4.5 million people worldwide are victims of sexual exploitation, in a business worth $99 billion a year.

Garrett Boyte's first clue that something was wrong came the day he moved to town.

When Noel Molina smells trash, he smells money. Lots of it.

Victims of the Sandy Hook massacre haven taken a lawsuit against gun manufacturer Remington, it's distributors and sellers claiming they have a legal obligation to safely market their weapons. CNN's Deborah Feyerick reports.

When Neil Armstrong put his boot on the moon in 1969, he became the first human to set foot on another world. He was one of only 12 men to walk on the moon.

What would it actually take to build a wall on the border between the U.S. and Mexico? CNN's Jason Carroll reports.

The water crisis in Flint, Michigan, may have you asking, "Does my home's water contain lead?"

The Supreme Court on Tuesday dealt President Barack Obama a blow by moving to temporarily block his administration's rules to limit greenhouse gas emissions from power plants.

Kelly Bowman reports on how you can get into shape while doing a favorite childhood activity ... jump roping!

CNN Chief Medical Correspondent Dr. Sanjay Gupta explains the causes and symptoms of chronic traumatic encephalopathy, more commonly known as CTE.

Sarah Palin on Wednesday spoke of the damaging toll a 2008 combat deployment in Iraq had on her son, Track, who was arrested and charged in a domestic violence incident on Monday night.

Citing continuing threats to airports around the country, aviation police sergeants at Chicago's two airports are demanding they be allowed to carry guns while on duty.

CNN's Elizabeth Cohen breaks down what salmonella is and how to prevent your family and you from getting it.

The Rev. Martin Luther King Jr. was a Republican. He opposed affirmative action. He grew so radical near the end of his life that he considered renouncing nonviolence.