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![Don't Believe the Hype: The Pumice Raft Won't Save the Great Barrier Reef](http://news.littlecdn.com/600x360/1567505561_5d6e3c996ae382.93793347.jpeg)
Don't Believe the Hype: The Pumice Raft Won't Save the Great Barrier Reef
The floating shelf of volcanic stone more than twice the size of Manhattan will nonetheless bring a fascinating array of life to the reef-- Read more on ScientificAmerican.com
!["Particle" Robots Work Together to Perform Tasks](http://news.littlecdn.com/600x360/1567505528_5d6e3c78b05770.46929041.jpeg)
"Particle" Robots Work Together to Perform Tasks
Clusters of decentralized units could be used in search and rescue operations or drug delivery-- Read more on ScientificAmerican.com
![To Justify Using Weed, Some Pregnant Women Cling to an Old and Dubious Study](http://news.littlecdn.com/600x360/1567505522_5d6e3c725e2aa5.69830204.jpeg)
To Justify Using Weed, Some Pregnant Women Cling to an Old and Dubious Study
Social media users extol—and health experts decry—a 25-year-old study from Jamaica suggesting cannabis use poses no harm to fetal development-- Read more on ScientificAmerican.com
![NASA checks SpaceX’s potential Starship landing sites on Mars, with water in mind](http://news.littlecdn.com/600x360/1567505320_5d6e3ba8329844.45348386.jpeg)
NASA checks SpaceX’s potential Starship landing sites on Mars, with water in mind
An artists’s conception shows SpaceX’s Starship craft on Mars. (SpaceX Illustration)
NASA is helping SpaceX get a fix on potential landing sites on Mars for its Starship super-spaceship, with an emphasis on Arcadia Planitia and Amazonis Planitia, reg...
![Cancer Medicine Is Failing Us](http://news.littlecdn.com/600x360/1564969325_5d47896d44de0.jpeg)
Cancer Medicine Is Failing Us
Our aggressive, expensive approach to cancer is doing more harm than good -- Read more on ScientificAmerican.com
![London Crawling with Drug-Resistant Microbes](http://news.littlecdn.com/600x360/1564873623_5d461397e2007.jpeg)
London Crawling with Drug-Resistant Microbes
Nearly half of bacteria gathered in public settings around the city were resistant to two or more commonly used antibiotics, like penicillin and erythromycin. Christopher Intagliata reports.-- Read more on ScientificAmerican.com
![Jeff Bezos touts a full-power firing of Blue Origin’s next-generation BE-4 rocket engine](http://news.littlecdn.com/600x360/1564807803_5d45127bb71ee.jpeg)
Jeff Bezos touts a full-power firing of Blue Origin’s next-generation BE-4 rocket engine
Amazon billionaire Jeff Bezos is showing off a picture of his Blue Origin space venture’s BE-4 rocket engine going full blast during a hot-fire test in Texas.
“BE-4 continues to rack up time on the test stand,” Bezos said in an accompanied by a pictu...
![Faster MRI Method Could Shake Up Brain Imaging](http://news.littlecdn.com/600x360/1564766107_5d446f9be41f9.jpeg)
Faster MRI Method Could Shake Up Brain Imaging
A new technique relies on measuring changes in tissue stiffness resulting from neural activity-- Read more on ScientificAmerican.com
![Historic Greenland Melt Is a "Glimpse of the Future"](http://news.littlecdn.com/600x360/1564765442_5d446d025c3b0.jpeg)
Historic Greenland Melt Is a "Glimpse of the Future"
A major heat wave pushed melting into areas of the ice sheet that normally stay frozen year-round-- Read more on ScientificAmerican.com
![A Year In, the Second-Largest Ebola Outbreak Continues to Rage](http://news.littlecdn.com/600x360/1564753929_5d4440090e124.jpeg)
A Year In, the Second-Largest Ebola Outbreak Continues to Rage
Despite vaccination and treatment efforts, the epidemic in Central Africa has resulted in 1,700 deaths and counting-- Read more on ScientificAmerican.com