Joe Palca

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A giant dust storm on Mars is threatening to end the mission of a NASA rover. The rover called Opportunity depends on solar panels to charge its batteries. Right now, the storm has practically blotted out the sun. NPR's Joe Palca has more.

For the first time, scientists say they have clear evidence that the chemical building blocks of life exist on Mars.

What they can't say yet is whether there is, or ever was, life on the Red Planet.

Each year, malaria kills about half a million people around the world. Health officials say a fast, cheap, accurate way to test for people infected with the malaria parasite would be extremely helpful in combating the disease. Now some engineers in California say they've invented a device they hope someday will do just that.

The device takes advantage of the fact that the malaria parasite produces tiny crystals inside infected red blood cells. These crystals have a magnetic property. Put a magnet next to a drop of infected blood, and the crystals move toward the magnet.

Scientists have new evidence that there are plumes of water erupting from the surface of Jupiter's icy moon Europa — plumes that could, maybe, possibly contain signs of life.

The evidence comes from data collected by the now-defunct Galileo spacecraft. Although the data has been available since it was collected in 1997, it's only now that an analysis confirms the existence of water plumes.

NASA is heading back to Mars. If all goes well, a two-stage Atlas V 401 will lift off from California's Vandenberg Air Force Base on Saturday morning. Onboard will be a lander named InSight, an $813.8 million mission to study the interior of the Red Planet.

Recent Mars missions have snapped pictures of the surface, studied rocks, dug in the dirt and looked for signs that water once flowed on Mars. But as Insight's principal investigator William "Bruce" Banerdt sees it, that's just scratching the surface.

An engineer in California has an invention that she hopes will someday help people with damaged lungs breathe easier.

Stanford University's Annelise Baron has developed a synthetic version of something called lung surfactant. Lung surfactant coats the tiny air sacs in the lung. Without it, every breath would be a struggle, like blowing up millions of little balloons. With surfactant, breathing is as easy as blowing soap bubbles.

A critical part of NASA's next $2 billion rover mission to Mars broke during testing earlier this month.

The Mars 2020 mission's heat shield was undergoing stress-testing when it developed a crack that appeared around its entire circumference. The shield is designed to protect the rover as it enters the Martian atmosphere.

A startup company in California is using machine learning and artificial intelligence to advise fire departments about how to plan for earthquakes and respond to them.

The company, One Concern, hopes its algorithms can take a lot of the guesswork out of the planning process for disaster response by making accurate predictions about earthquake damage. It's one of a handful of companies rolling out artificial intelligence and machine learning systems that could help predict and respond to floods, cyber-attacks and other large-scale disasters.

NASA is building a new X plane with the goal of deadening the loud thunderclap that jets make when they travel faster than sound.

Those noisy sonic booms are one of the reasons supersonic planes aren't used commercially today.

The Low-Boom Flight Demonstration program will build the new experimental aircraft and then fly it over cities to see if it's quiet enough to satisfy residents and regulators.

A team of engineers at Dartmouth College has invented a semiconductor chip that could someday give the camera in your phone the kind of vision even a superhero would envy.

The new technology comes from Eric Fossum, a professor of engineering and his colleagues at Dartmouth's Thayer School of Engineering.

An international team of astronomers has concluded that when it comes to theories about colliding neutron stars, Einstein got it right. Everybody else, not so much.

A neutron star is what's left when a star burns out and collapses in on itself, leaving a small, incredibly dense ball.

Astronomers in California are building the largest digital camera in the world. It will go on a giant telescope taking shape in Chile called the Large Synoptic Survey Telescope.

LSST is different from most large telescopes. Instead of staring at a tiny patch of the sky and taking essentially one snapshot in time, LSST will take a panorama of every part of the sky...and it will do so over and over and over. The idea is to see what's moving or changing in the heavens.

Editor's note: The Environmental Protection Agency has approved the use of mosquitoes infected with Wolbachia bacteria as a "biopesticide" in 20 states and the District of Columbia. The bacteria keep mosquitoes from spreading diseases like dengue and Zika. Back in 2012, NPR's Joe Palca wrote about scientist Scott O'Neill's 20 years of struggle to make the idea of Wolbachia-infected mosquitoes work. Here is his story.

Scientists in California think they may have found a way to transplant insulin-producing cells into diabetic patients who lack those cells — and protect the little insulin-producers from immune rejection. Their system, one of several promising approaches under development, hasn't yet been tested in people. But if it works, it could make living with diabetes much less of a burden.

For now, patients with Type-1 diabetes have to regularly test their blood sugar levels, and inject themselves with insulin when it's needed.

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