Aaron Sidder

 

Aaron Sidder is an ecologist and a freelance science writer based in Denver, CO. He is a former AAAS Mass Media Fellow whose work has appeared National Geographic and Eos.

Sigmund Freud, G. Stanley Hall, C.G. Jung, A.A. Brill, Ernest Jones, and Sándor Ferenczi posed at Clark University, Worcester, Massachusetts in September, 1909.

When Freud Met Jung

The meeting of the minds happened 110 years ago

Wild pigs lack natural predators in much of the United States.

Texas Approves Pesticide Targeting Wild Pigs

But hunters and conservationists are concerned that other animals will be exposed to the toxin

Strong atmospheric river events are driving record precipitation across the state of California.

Rivers in the Atmosphere Converge to Give California a Huge Downpour

All aboard the Pineapple Express

The Little Rock Nine escorted by soldiers from the 101st Airborne Division into Little Rock Central High.

That Time the U.S. Government Won an Oscar

Today, the award is kept on permanent display in the National Archives

Bee pollination drives billions of dollars a year in global agricultural production, but the busy insects are under threat.

New Map Highlights Bee Population Declines Across the U.S.

As wild bee populations continue to fall, new research identifies counties that will be hit the hardest

Walt Whitman photographed in 1854, two years after his serialized novella was first published anonymously.

A Graduate Student Just Discovered a Lost Work of Fiction by Walt Whitman

The serialized novella was first published anonymously in 1852

Tracking individual lemurs—such as the endangered red-bellied lemur pictured here—is no easy task. But researchers hope that facial recognition software can help in the fight for the survival of the bushy-tailed primates.

How Do You Pick a Lemur Out of a Lineup? This Software Makes the Leap

Facial recognition software can identify individuals, helping researchers conserve the endangered primate

The Country’s Most Famous Bald Eagle Pair Just Laid Another Egg

To the delight of millions of online viewers, the nesting eagles at the U.S. National Arboretum welcomed a new egg to their nest

Long thought to be a genetic mutation, albino redwoods may actually serve as a forest filter.

Stalking Down Answers: Why Are Some Redwoods White?

The mysterious pale trees many not just be odd genetic mutations, a new study finds

America, Maurizio Cattelan, gold, 2016

You’ll Want to Sit on Guggenheim’s Latest Piece, an 18-Karat Golden Toilet

Maurizio Cattelan returns from retirement with this pretentious potty

The monument protects an array of endemic, threatened and endangered species, including the sperm whale.

Obama Declares the First Atlantic Ocean National Marine Monument

With the announcement of the Northeast Canyons and Seamounts Marine National Monument, Obama solidifies his legacy as an ocean guardian

This image shows a scrap of the indigo-dyed fabric (right) and a diagram of the cloth (left), highlighting the blue stripes.

Earliest Evidence of Indigo Dye Found at Ancient Peruvian Burial Site

The dyed fabrics represent the earliest known use of indigo in the world, predating Egyptian samples by about 1,600 years

Dwindling sea ice in the Arctic threatens polar bears and causes increased conflict with humans.

Resupply Helps Trapped Arctic Scientists Scare Off Polar Bear "Siege"

With sea ice cover at record lows, polar bear conflict with humans becomes more common

Produced by the European Space Agency’s Gaia satellite, this three-dimensional view of the Milky Way Galaxy is the first of its kind.

Behold a Billion Stars in This Stunning New Map of the Milky Way

Generated from Gaia satellite data, this stellar new map is the most complete chart of our galaxy to date

The proposed pipeline is nearly 60 percent complete.

Understanding the Controversy Behind the Dakota Access Pipeline

What to know as protesters and the oil company continue to clash

Randall Munroe’s xkcd comic tackles a range of popular science topics with an enlightening and humorous approach.

New xkcd Comic Masterfully Shows How Climate Has Changed Through Time

Scroll through 20,000 years of humorously illustrated climate data

The HMS Terror was missing for nearly 170 years after it got trapped in ice and sunk in frigid Arctic waters.

Second Ship From Sir John Franklin's 19th-Century Expedition Found

Two years and a day after its sister ship was discovered, Canadian researchers find the H.M.S. <i>Terror</i>

How badly do you want those fries?

What Does Science Say About the Five-Second Rule? It’s Complicated

The real world is a lot more nuanced than this simple rule reflects

Pew Research Shows Public Libraries Remain Vital to Communities

The latest poll shows that the majority of Americans think libraries have the resources they need

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