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Skyrocketing demand and a shrinking food source are putting pressure on supplies of the tiny, nutrient-packed fish.

Yuma County, Arizona, grows 90% of the leafy greens the U.S. consumes in the winter. But the state relies on water from the Colorado River, which is at record lows.

The Nancy Grace Roman Space Telescope is expected to survey hundreds of millions of stars and billions of galaxies. Its findings could unlock clues about dark energy and dark matter.

NBC News' Gadi Schwartz speaks with NASA administrator Jared Isaacman about the Nancy Grace Roman Telescope launch, the Artemis III launch in 2027, and SpaceX's new Louisiana Starbase.

These $30-an-hour humanoid robots are cleaning homes in San Francisco, tackling tasks like mopping floors, tidying rooms and cleaning kitchens. NBC News' Tom Llamas speaks with Tau Robotics CEO and co-founder Alexander Koch about how the robots work ...

Earth's shadow will appear reddish orange on the lunar surface -- the reason a lunar eclipse is also known as a "blood moon."

SpaceX's Elon Musk plans to build new Starship launchpads in Louisiana, replacing sections of marshland as part of a major spaceport project. Space journalist Kristin Fisher talks with NBC News' Gadi Schwartz about the plans.

NASA had hoped to prevent its Neil Gehrels Swift Observatory from falling toward Earth and breaking apart in the atmosphere. But the spacecraft tasked with the rescue ran into problems.

The World Robot Conference in Beijing provides an opportunity for China's robot makers to display their innovations and convince investors of the real-world potential for the technology.

A defunct part of a Falcon 9 rocket slammed into the moon uncontrolled this month at an estimated 5,400 mph. Now NASA has photos.