Geoff Brumfiel
Stories
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Science
SpaceX Rocket Launches With Astronauts Aboard
The company's third crewed spacecraft took off from Florida early Friday.
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Health
Vaccine Refusal May Put Herd Immunity At Risk, Researchers Warn
One in four Americans say they won't get a coronavirus vaccine. Researchers say it could keep the nation from reaching a critical tipping point.
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Health
Herd Immunity Is At Risk If Many People In U.S. Say 'No' To Vaccine
Vaccines have created a way out of the COVID-19 pandemic, but public health experts are worried that hesitancy and misinformation may stop the U.S. from reaching the goal of herd immunity.
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Health
A 300-Year-Old Tale Of One Woman's Quest To Stop A Deadly Virus
In 1721, London was in the grips of a deadly smallpox epidemic. One woman learned how to stop it, but her solution sowed political division.
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Science
Experts Ponder Nuclear Rockets To Send Humans To Mars
Nuclear rocket technology might be the fastest, safest way to get to the red planet. But if NASA wants to go, it should start development now.
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Science
More Than 80 Nations Sign On To A New Global Treaty To Prohibit Nuclear Weapons
A new global treaty banning nuclear weapons will go into force on Friday. More than 80 countries have signed on to it — but none of them are countries that have nuclear weapons.
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Politics
Pelosi Asks Military To Limit Trump's Nuclear Authority. Here's How That System Works
The House speaker told colleagues she had spoken with the chairman of the Joint Chiefs of Staff about keeping the nuclear codes from an "unhinged President."
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Out Of This World: 2020's Amazing Achievements In Space
This has been a tough year for pretty much everyone on Earth. But things have been going much better in space. One of the big milestone was for NASA and the commercial company SpaceX.
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World
What Happens Next? The Aftermath Of A Iranian Scientist's Assassination
The killing of a top Iranian scientist last week will likely complicate efforts to restart the Iran nuclear deal. Will Iran really throw out nuclear weapons inspectors?
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Planetary Scientists Say It's Time To Explore Venus
Three missions from Earth are currently headed to Mars. But some scientists are saying it's time to go to Venus, despite all the challenges in heading to Earth's toxic, volcanic planetary neighbor.