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- SCIENTIFIC AMERICANA DAY AGO

60 years ago NASA took the first ever photo of Earth from the moon—and began a legacy
Snapped on August 23, 1966, by the uncrewed Lunar Orbiter 1, the photo's legacy lives on in the breathtaking images of Earth taken by the Artemis II crew
- SCIENTIFIC AMERICANA DAY AGO

How “thunderquakes” could help reveal hidden structures inside the Earth
When that energy reaches the ground, some of it is converted into seismic waves that ripple through the soil and rock beneath—"thunderquakes"
2 DAYS AGO
U.S. Cuts Colorado River Water for Arizona, California and Nevada
Arizona’s share of the river will shrink by a third, likely increasing reliance on groundwater and raising pressure on agriculture.
A DAY AGO
Quiz question: It’s a Greek letter and a guy’s name. What does it mean?
Test your science knowledge.
- SCIENTIFIC AMERICAN11 HOURS AGO

Climate change opens Arctic shipping routes as roadless forest protections face rollback
Forests, extreme weather and the realities of a warming world
- SCIENTIFIC AMERICAN11 HOURS AGO

See states’ kindergarten vaccination rates—from highest to lowest
Even as cases of diseases such as measles rise, childhood vaccinations are declining, thanks to changes in public health policies and antivaccine sentiment, experts say
- SCIENTIFIC AMERICAN10 HOURS AGO

Sorry, Pluto’s still not a planet
On the 20th anniversary of Pluto's infamous demotion, Mike "Pluto Killer" Brown explains why any reversal of that decision would be driven more by nostalgia than science
- SCIENTIFIC AMERICAN7 HOURS AGO

China delays ambitious Chang’e 7 moon mission until 2027
The search for frozen water is crucial to both China's and NASA's plans to establish permanent moon bases
12 HOURS AGO
Why Getting High Has Only Gotten Cheaper
The “war on drugs” sought to reduce substance abuse by driving up prices and lowering demand. Today, street drugs are less expensive and more dangerous than ever.