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Science / Our Planet

Although the asteroid strike that created Chicxulub crater in modern-day Mexico dramatically affected life on Earth, the fiery crash isn't the whole story of the fate of the dinosaurs.

We Still Don’t Know Why the Reign of the Dinosaurs Ended

The asteroid strike on the Yucatán Peninsula 66 million years ago is only part of the story

Signals from other workers can tell ants when and where to fan out and search for food.

Ant Colonies Retain Memories That Outlast the Lifespans of Individuals

An ant colony can thrive for decades, changing its behavior based on past events even as individual ants die off every year or so

The Ten Best Science Books of 2018

These titles explore the wide-ranging implications of new discoveries and experiments, while grounding them in historical context

Ichthyosaurs (Greek for "fish lizard") were large marine reptiles that lived alongside the dinosaurs during most of the Mesozoic era.

Like Whales and Dolphins, Prehistoric ‘Fish Lizards’ Kept Warm With Blubber

A new analysis of a pristine ichthyosaur fossil reveals that the prehistoric marine reptile had a layer of insulating fatty tissue

Hurricane Florence causes severe flooding to a church and surrounding areas in Spring Lake, NC, Sept. 17, 2018.

As Port Cities Dredge Deeper to Accommodate Growing Cargo Ships, the Risk of Inland Flooding May Rise

By smoothing and deepening waterways, the hydrodynamics of estuaries and rivers can be dramatically changed to invite in the sea

One of NIST’s ytterbium optical lattice clocks.

Scientists Measure the Second With Record-Breaking Precision

A new generation of optical clocks are becoming ever more reliable as physicists work to redefine time

A sea turtle swimming by bleached corals of the Great Barrier Reef near Heron Island off the east coast of Australia.

Coral Larvae Cryogenically Frozen and Thawed for the First Time

Warming oceans are killing the world’s reefs, but scientists may have found a way to help them get out of hot water—by putting corals into a deep freeze

Hurricane Harvey unexpectedly flooded large parts of Houston despite abating wind speeds.

How Satellites and Big Data Are Predicting the Behavior of Hurricanes and Other Natural Disasters

Leveraging machine learning could help diminish the damages of storms and wildfires

The marsupial lion (Thylacoleo carnifex) stalked Australian forests tens of thousands of years ago.

How a Changing Climate May Have Killed Off the Marsupial Lion

The fearsome predator, related to koalas and wombats, ruled the wilds of Australia until the loss of its habitat helped drive it to extinction

A figure representing the Kayentatherium babies found with an adult specimen. They are the only known fossils of babies from an extinct mammal relative that lived during the Early Jurassic.

Weasel-Like Fossils Reveal Evolutionary Clues of the First Mammals

A protomammal known as Kayentatherium was discovered with 38 babies in 185-million-year-old rock

The NIST-4 Kibble balance, an electromagnetic weighing machine that is used to measure Planck's constant, and in turn, redefine the kilogram.

Scientists Are About to Redefine the Kilogram and Shake Up Our System of Measures

After more than 100 years of defining the kilogram according to a metal artifact, humanity is preparing to change the unit based on a constant of nature

Princepajaro, a male California sea lion, swims in a pool during treatment for leptospirosis at The Marine Mammal Center in Sausalito, CA. When a leptospirosis outbreak occurs, the Center’s scientists study the disease to learn more about what causes an outbreak and how we can improve treatment for infected animals.

Major Disease Outbreak Strikes California Sea Lions

Leptospirosis afflicts sea lions on a semi-regular cycle, but warming waters and migrating fish could make the marine mammals more susceptible

Seagrass plants have a large capacity for absorbing and storing carbon on the seafloor.

Underwater Meadows of Seagrass Could Be the Ideal Carbon Sinks

Many ecosystems absorb and store vast amounts of carbon dioxide, and seagrass is one of the most efficient natural carbon storage environments

The flavor of chocolate depends on numerous factors, from the soil the cacao plant was grown in, to the length of time the cocoa beans are fermented.

The Science of Good Chocolate

Meet the sensory scientist who is decoding the terroir of chocolate—and working to safeguard the cacao plant that gives us the sweet dark treat

A North Atlantic right whale rests at the ocean’s surface. With an estimated 100 reproductive females remaining, the species could be unable to reproduce naturally in 20 years.

The Plight of the Right Whale

With dwindling numbers due to snags in lobster traps and collisions with ships, the right whale is looking for a way to make a comeback

Gourds come in all shapes and sizes—some sweet and delicious, some stiff and bitter, and some that are just plain odd.

Halloween

The Science Behind Decorative Gourd Season

Gourds are the runts of their family of fruits, too tough and bitter to eat, but they remain one of the most popular crops of fall

Carbon-dating techniques have now identified this ancient maize cob at about 950 to 1,000 years old.

What Ancient Maize Can Tell Us About Thousands of Years of Civilization in America

It took millennia, but America’s founding farmers developed the grain that would fuel civilizations—and still does

High school students at the University of Maine Farmington's Upward Bound program play the World Climate simulation.

This Game Is Moving People to Take Action Against Climate Change

In the ‘World Climate’ simulation, people play delegates to UN climate negotiations and work to strike an agreement that meets global climate goals

To prevent animal species from going extinct, some ecologists suggest introducing them to urban environments to live alongside humans.

To Save Endangered Species, Should We Bring Them Into Our Cities?

Some ecologists believe our best chance to preserve biodiversity is to introduce non-native species to cities—but others warn of unintended consequences

Anna Du is one of 30 Broadcom Masters finalists.

This 12-Year-Old Girl Built a Robot That Can Find Microplastics In the Ocean

Massachusetts seventh grader Anna Du has developed an ROV that moves through water and detects microplastics on the seafloor

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