Shannon Hall
Scientific American
Hanover, NH, United States
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Past articles by Shannon:
Weird Supernova Remnant Blows Scientists’ Minds
Fireworks display from rare dying star is unlike anything astronomers have seen → Read More
New Omicron Variants Are Here—What We Know So Far
The variants appear to sneak past the immune system, but vaccines will likely continue to hold strong → Read More
Long COVID in Children Appears Less Common Than Early Fears Suggested
Although the risk of long COVID is not insignificant, it is much lower than previously thought → Read More
Model Suggests Toxic Transformation on Venus
A recent study shows how Venus could have explosively changed from habitable to deadly → Read More
Biggest Ever Yellowstone Eruption Revealed
The ancient supervolcano under the national park was much more explosive in its early history and could be slowing down, a new study suggests → Read More
Kilometers of "Dark Cable" Form the Newest Seismic Sensors
Fiber-optic cables stretching below cities, through glaciers and along the seafloor could record earthquakes and more → Read More
Asteroid That Killed the Dinosaurs Was Great for Bacteria
The asteroid moved 24 times faster than a rifle bullet as it struck Earth some 66 million years ago. Its supersonic shock wave flattened trees across North and South America, and its heat wave sparked incomprehensibly large forest fires.The event lofted so much debris into the atmosphere that photosynthesis → Read More
Newfound "Ablating" Exoplanets Could Reveal Alien Geology
By probing close-in worlds, the discovery will help astronomers better understand how planets form and evolve → Read More
Lights Out: Astronomers Illuminate the Mystery of Vanishing Quasars
A new census of the universe’s most luminous objects brings us closer to solving why some of them seem to disappear → Read More
Frozen Researchers Will Greatly Improve Arctic Weather Prediction
Their data will also bolster climate models that forecast extreme weather where we all live → Read More
Ship Freezes Itself in Arctic Ice to Study Climate Change
Researchers trapped in the central Arctic Ocean for a year prepare to unlock secrets of the region’s changing climate → Read More
These Plants Can Replace Meat--but Will Doing So Help the Environment?
Moving away from meat would reduce fertilizer use, cropland and carbon dioxide emissions. Yet it alone will not save the planet → Read More
Venus, Earth's Evil Twin, Beckons Space Agencies
Once a water-rich Eden, the hellish planet could reveal how to find habitable worlds around distant stars → Read More
Water on Europa--with a Pinch of Salt
Much like Earth’s seas, the subsurface ocean of this icy moon of Jupiter contains sodium chloride, the main ingredient of table salt → Read More
The Not So Dead Sea: Traces of Ancient Bacteria Found in the Lake's Sediments
A new finding points to possible life in other extreme environments, including on ancient Mars → Read More
The Not So Dead Sea: Traces of Ancient Bacteria Found in the Lake's Sediments
A new finding points to possible life in other extreme environments, including on ancient Mars → Read More
An Impossible Scenario: Scientists Watch as Heat Moves at the Speed of Sound
A rare phenomenon seen in just a handful of materials at forbidding temperatures has been detected within “warm” graphite—a finding that could aid future microelectronics → Read More
An Impossible Scenario: Scientists Watch as Heat Moves at the Speed of Sound
A rare phenomenon seen in just a handful of materials at forbidding temperatures has been detected within “warm” graphite—a finding that could aid future microelectronics → Read More
All Sand on Earth Could Be Made of Star Stuff
Silica, a common ingredient in sand, concrete and glass, may have its origins in supernovae → Read More
Caught in the Act--Astronomers Get Their Best Look Yet at a Supernova Blowing Up
New observations of a stellar explosion have revealed a surprise that could point to the trigger behind these violent, yet mysterious, eruptions → Read More