Is it Safe to Fly During the Pandemic?
The CDC advises people to avoid travel for the 2020 holidays due to COVID-19 surges.
Saving Notre Dame Preview
When Notre Dame Cathedral caught fire in 2019, Paris came perilously close to losing more than 800 years of history. As engineers rebuild, researchers use cutting-edge technology to piece together what happened and restore the cathedral.
Stabilizing Notre Dame's Famous Buttresses
After the Notre Dame fire of 2019, a team of architects and engineers must design a way to stabilize the famous cathedral's buttresses before its roof and entire structure collapses.
Saving Notre Dame's Stained Glass Masterpieces
Discover the effects the fire had on Notre Dame's stained glass, and how one scientist is meticulously cleaning and repairing it.
Repairing Notre Dame's Vaults with Underground Quarries
By exploring Paris' underground tunnels, can scientists identify the original source of Notre Dame's vaulting stone, damaged in the 2019 fire?
The Science of the COVID-19 Treatments Trump Received
President Trump said that he recovered from COVID-19 in part thanks to an antibody cocktail. What is an antibody cocktail and how does it work?
The Tech Behind Mail-In Voting
Election officials have braced for an unprecedented wave of mail-in ballots. What safeguards are in place to track individual ballots as they travel to voters and back to the election office?
Can We Cool the Planet? Promo
As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?
What is Solar Geoengineering and Why is it Controversial?
Scientists propose putting reflective aerosols into the stratosphere to reflect the sun's rays. But will this have unintended consequences?
How Much Coal Do People Burn Each Year?
This visualization uses Washington D.C.'s National Mall to show the scale of human coal consumption—and how much CO2 it adds to our atmosphere.
Meet the NASA Scientist Who Uses Lasers to Study Forests
Using laser technology aboard the International Space Station, Lola Fatoyinbo can get a 3D measure of forest carbon—making it the first near-global dataset.
Asteroids Provide Hints About the "Ingredients" in Planets
The composition of asteroid Bennu may hold clues about the ingredients that make Earth.
Inside OSIRIS-REx’s Mission to Tag Asteroid Bennu
NASA's OSIRIS-REx spacecraft successfully touched and collected a sample from the surface of asteroid Bennu—without a human at the controls.
Did This Asteroid Just Turn into a Comet?
Scientists found bits of rock and dust flying off the asteroid Bennu. Is the OSIRIS-REx spacecraft in danger?
Lions Return to Mozambique's Gorongosa National Park
By protecting lions from traps and snares, veterinarians, park rangers, and ecologists are working together to restore this feline's population in Gorongosa National Park.
Meet Gorongosa National Park’s Head Veterinarian
“To be a veterinarian in one of the best conservation areas in the country [of Mozambique] is to have the best office in the world,” Dr. Tonecas Paulo says.
Nature's Fear Factor Preview
For animals in Mozambique’s Gorongosa National Park, the normal balance of competition and predation was upended when a war wiped out the top predators. The remaining animals didn’t simply grow in numbers—they began behaving in unusual ways, veering outside their typical territories and feeding patterns.
The Anatomy of an African Wild Dog Hunt
Gorongosa National Park's top feline predator—the lion—hunts by ambush. Discover how gregarious wild dogs use an entirely different strategy to take down prey.
How Medieval Parchment is Made
The last remaining master animal-skin parchment maker in the world demonstrates how paper was made in medieval Europe (and why it wasn’t for vegetarians).
The Printing Press Revolutionized the Spread of Information
The European printing revolution began in Germany in 1448 when goldsmith Johannes Gutenberg began casting letters in metal.
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