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KPCC's Science Reporter
Jacob's time in journalism began when he was 16, when he'd skip high school to spend his days working on the mid-day newscast at KPFK in Los Angeles.
Since then he's worked at NPR in Washington, D.C., as a producer on "The Madeleine Brand Show" and "Take Two" at KPCC and as a reporter, covering the political and social impact of California's new marijuana industry.
Now, he's the science reporter for the station.
Stories by Jacob Margolis
The tiny, camera shy, asexual worm has been caught in the act; research on how its two halves regenerate could help scientists learn more about how stem cells work.
The culprit is particulate matter 1/25th the size of a human hair that enters the bloodstream and wreaks havoc on critical organs.
Scientists hope that if they can figure out why jellyfish sleep, they might be able to figure out why animals, including humans, sleep too.
Cassini's final signal was received at JPL around 5 a.m. Friday morning, signaling the "end of mission" call, followed by cheers and even some tears.
While it sounds bad that scientists are crashing the Cassini spacecraft into Saturn, the final move is arguably one of the most important of the mission.
Asteroid Florence is 2.7 miles wide, one of the largest known near-Earth objects ever spotted, and it'll pass by 4.4 million miles from Earth September 1.
Once the virus enters the bloodstream of a pregnant woman it tricks the immune system, suppresses it and spreads quickly.
On Aug. 21, the moon will cross in between the earth and the sun, the land will darken, the temperature will drop and we'll see an astronomical phenomenon.
Saturn's sixth largest moon is a winter wonderland, always covered in a fresh layer of snow. If you had a spacesuit and gnarly set of skis, you might be good to go.
New studies predict heat waves and droughts will become more common as temperatures continue to rise. Rising seas are also likely swamp low-lying areas.
As temperatures rise and pollution increases, more people could suffer heart attacks, stroke, lung cancer and more diseases.
Scientists say that they've come up with an approach to cancer that's less atomic bomb and more surgical strike, using stem cells.
It's so cold on Titan that its equator is nothing but dunes as far as the eye can see. But, they're not made of sand. They're made of little chips of water.
Scientists from USC and Cal Tech have found that a certain enzyme can greatly speed up the process of transforming carbon dioxide into alkaline water.
If you spread out all of the plastic ever manufactured in a pile that was ankle deep, it would cover an area of land roughly the size of Argentina, a researcher says.