One hundred wood bison will be reintroduced to the Alaskan wilderness later this month, somewhere they have not lived in the wild for over a century.

Bringing the Wood Bison Back to Alaska

Once nearly extinct, the subspecies is set to return to the United States

The Crocodile Hunter’s Family Shares His Controversial Approach to Studying the Crocs

Steve Irwin’s wife and kids are feeding the debate over keeping animals in captivity

None

Ask Smithsonian: What’s the Deepest Hole Ever Dug?

The answer to the question, says a Smithsonian researcher, is more about why we dig, than how low you can go

This optical atomic clock uses strontium atoms to tell time.

Send Atomic Clocks to Space to Find Gravitational Waves

A new breed of the hyper-accurate clocks could help scientists detect the elusive ripples in space-time faster and cheaper

Snack first, then try on that cardigan.

Hunger Makes You Buy More Stuff, Even If It’s Not Food

Whether you’re shopping at the mall or online, having the munchies will compel you to purchase extraneous things

Midnight Snacking Is Bad for Your Brain

Experiments in mice show that misaligned eating patterns can mess with the brain’s ability to form memories and learn new tasks

As a kid, you may remember getting your first glimpse of paramecium in pond water or the cell structure of an onion by peering through a microscope.

Ultra-Cheap Microscopes Could Save Millions of Lives

Researchers are designing portable microscopes that cost just a few dollars to make

Luna moths - arguably the most spectacular moths in North America - deflect bat attacks with their ornate wing tails.

New Research

Luna Moths’ Gorgeous Wings Throw Off Bat Attacks

Spinning twin tails at the end of moth wings garble bats’ sonar cries, causing the winged predators to miss the tasty mark

Revolution Bioengineering is working to genetically engineer petunias that continuously change from pink to blue and back again.

Art Meets Science

Would You Like to Grow Color-Changing Flowers?

A Colorado company is working to genetically engineer petunias that change colors throughout the day

Best Space Photos of the Week

These Spacey Treats Include a Galactic Smiley Face and an Interstellar Rose

A lucky lens and a pair of mismatched star twins feature among our picks for the week’s best space images

The World of Chocolate

What Physics Tells Us About Making the Perfect Chocolate

Like carbon, the treat can take on many crystalline forms, so a master chocolatier must know how to temper it in just the right way

An example of a pot used by the ancient Maya

Chocolate Week

What We Know About the Earliest History of Chocolate

We’ve learned things that could help today’s artisan chocolatiers improve their trade

The Cliff Palace in Mesa Verde National Park in Colorado was abandoned hundreds of years ago, probably because of a severe drought. Scientists now predict that the region could experience an even worse megadrought in the latter half of the 21st century.

Anthropocene

The Western U.S. Could Soon Face the Worst Megadrought in a Millennium

Climate models predict that the region will be drier than the droughts that likely caused ancient Native Americans to abandon their pueblo cities

Our furry friends might be able to infer our mood based on our facial expressions - just like human buddies do.

New Research

Dogs Can Tell Whether You’re Making a Happy or Mad Face

For the first time, science shows that a non-human animal can recognize the emotional state of another species

Is fine chocolate slipping through our fingers?

The World of Chocolate

How to Save the Chocolate Tree Without Sacrificing Flavor

Demand, disease and climate change are threatening cocoa, but a new breed of clones could keep the treat abundant and tasty

Imagining the future of artificial hearts.

Help for the Brokenhearted: Wearable, Biosynthetic and ‘Beatless’ Artificial Hearts

Cow-machine hybrids and continuous-flow technologies are helping people survive devastating heart failure

Adrenaline crystals (polarized light micrographs). Adrenaline, also called epinephrine, is normally present in blood in small quantities. It is a hormone produced in the adrenal glands above the kidneys. The glands are controlled by the hypothalamus, the part of the brain responsible for instinct and emotion. In times of stress, more adrenaline is secreted into the bloodstream. It widens the airways of the lungs and constricts small blood vessels. This makes the muscles work harder and produces a "fight or flight" response. Adrenaline used as a drug expands the bronchioles in acute asthma attacks and stimulates the heart in cases of anaphylactic shock.

Art Meets Science

Blood Clots, Liver Cells and Bird Flu Are Surprisingly Beautiful Under a Microscope

The brightly-colored micrographs and scans in a new book, Science is Beautiful, answer big questions about the human body

Don't try this at home.

The World of Chocolate

Healers Once Prescribed Chocolate Like Aspirin

From ancient Mesoamerica to Renaissance Europe, the modern confectionary treat has medical roots

Though threatened by adverse conditions in the Chesapeake Bay, oysters are filter feeders and may provide a much-needed solution for better water quality.

Let Oysters Get Sick to Clean Up the Chesapeake

The delicious oyster you love to slurp might be the best bet for clearing away pollutants

Dabbling around for a meal.

Ducks Help Explain How We Feel All the Feels

Highly sensitive nerves in duck bills are offering clues to the way we experience the sense of touch

Page 218 of 456