A Covid-19 restrictions sign hangs outside a supermarket in Austin, Texas. Lauren Ancel Meyers at the University of Texas at Austin has shared her team’s modeling results with city officials who make decisions about Covid-19 measures.

What Data Scientists Learned by Modeling the Spread of Covid-19

Models of the disease have become more complex, but are still only as good as the assumptions at their core and the data that feed them

A woman hugs her granddaughter. Some scientists believe child care from grandmothers influenced human evolution.

How Much Did Grandmothers Influence Human Evolution?

Scientists debate the evolutionary benefits of menopause

A young man watches incoming presidential election results in 2016 on the giant screens of Times Square.

Anxious About Election Results? Here's What's Happening in Your Brain as You Wait

Scientists are learning more about the neuroscience of awaiting uncertain outcomes

The Pyramid of the Magician stands over 100 feet tall and contains five different temples built in succession.

The Maya Ruins at Uxmal Still Have More Stories to Tell

The remains of a provincial capital on the Yucatan Peninsula attest to a people trying to fortify their place in the world

Fibonacci spiral

The Fibonacci Sequence Is Everywhere—Even the Troubled Stock Market

The curious set of numbers shows up in nature and also in human activities.

The "knapsack problem" is a widespread computing challenge—and no, it doesn't have to do just with literal backpacks.

How the Mathematical Conundrum Called the 'Knapsack Problem' Is All Around Us

A litany of issues in business, finance, container ship loading and aircraft loading derive from this one simple dilemma

Charlotte Moore Sitterly made huge strides in our understanding of how atoms are structured and what stars, especially our sun, are made of.

How Charlotte Moore Sitterly Wrote The Encyclopedia of Starlight

The "world’s most honored woman astrophysicist" worked tirelessly for decades to measure the makeup of the sun and the stars

As the 2017 North American total solar eclipse comes to an end, the famous "diamond ring" becomes visible. The sun's corona is also visible, with the star Regulus to the left.

A Total Solar Eclipse 100 Years Ago Proved Einstein’s General Relativity

Two teams of astronomers voyaged to Africa and Brazil to observe the most famous eclipse in science

A photographic plate of the 1919 total solar eclipse, taken by Andrew Claude de la Cherois Crommelin and Charles Rundle Davidson during an expedition to Sobral, Brazil. The 1919 eclipse was used by Arthur Eddington, who observed it from the island of Principe off the west coast of Africa, to provide the first experimental evidence of Einstein's theory of relativity.

What the Obsolete Art of Mapping the Skies on Glass Plates Can Still Teach Us

The first pictures of the sky were taken on glass photographic plates, and these treasured artifacts can still help scientists make discoveries today

A map of the moon with labeled features, from Selenographia by Johannes Hevelius.

The 17th-Century Astronomer Who Made the First Atlas of the Moon

Johannes Hevelius drew some of the first maps of the moon, praised for their detail, from his homemade rooftop observatory in the Kingdom of Poland

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