Increased cancer risk associated with artificial sweeteners, study says

In particular, the authors found aspartame and acesulfame were associated with increased cancer risk and higher risks were observed for breast cancer and obesity-related cancers.

Nostalgia may help reduce our perception of pain, study shows

A recent study found that viewing positive nostalgic photographs decreases activity in pain-related areas of the brain.

Meet the men behind the all-private mission to the ISS

A former decorated NASA astronaut and an international crew of paying customers will become the first to dock at the International Space Station as an all-private mission flying in SpaceX's Crew Dragon spacecraft next month.

Invasive acid-spewing crazy ants population control possible with fungus, scientists say

The tawny crazy ant creates a formic acid as venom to protect itself from other ant species. The insects are able to spew the acid from their abdomen but are not poisonous, scientists said.

How are tornadoes measured? NWS uses the Enhanced Fujita Scale

Adaleigh Rowe explains how the National Weather Service uses the Enhanced Fujita Scale to determine tornado strength.

Space Orbiter to provide closest images of sun

The European Space Orbiter reached its closest distance to the sun Saturday giving researchers an unprecedented look, according to NASA.

Sheriff suspects grizzly bear killed Montana hiker

The victim was identified as Craig Clouatre, 40, of Livingston. No details were provided on where he was found or why a grizzly bear was believed responsible for his death.

Microplastics found in human blood for the 1st time, study says

Microplastics have been found in our food, drinks and even in human placentas. Now, researchers say they have found the first-ever evidence of microplastics in human blood.

Satellite images show New York-sized ice shelf collapse in East Antarctica

Scientists are concerned because an ice shelf the size of New York City collapsed in East Antarctica, an area that had long been thought to be stable.

After 4 months and 160,000 pounds of lettuce, Florida plans to wind down manatee feeding program

A pilot feeding program designed to reduce starvation issues amongst Florida manatees will soon conclude as experts say warmer waters are helping to disperse the population to their summer habitats, lessening the strain on natural resources.

VIDEO: Mountain lion runs around busy shopping plaza in Irvine

Irvine Police had what they called a "purr-ty scary situation" earlier this week, as a mountain lion led officers on a chase through a local shopping center.

Parts of Milky Way are older than expected, astronomers say

There are parts of the galaxy that are believed to be two billion years older than previously thought, according to the European Space Agency.

NASA confirms a big milestone for planetary discovery: 5,000 exoplanets

“There are many more planets in our galaxy we haven't found yet, as many as 100 to 200 billion. It's mind-blowing,” the lead scientist said.

SpaceX's new Dragon capsule named 'Freedom'

SpaceX's Crew-4 will launch to the International Space Station (ISS) in April aboard a Dragon capsule named "Freedom." 

Virginia-born astronaut to ride Russian spacecraft home amid tensions

U.S. astronaut and Fairfax County native Mark Vande Hei has made it through nearly a year in space, but faces what could be his trickiest assignment yet: riding a Russian capsule back to Earth in the midst of deepening tensions between the countries.

A wet dress rehearsal for a rocket? NASA prepares Artemis I for final test

Before any performance, whether a school play or a Broadway production, there is a dress rehearsal – usually many rehearsals – before opening night. The same goes for NASA's new moon rocket.