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Smithsonian Tropical Research Institute

Rake marks on humpback flukes may be literal tallies of battles won—like the scars seen on the upper right fluke fin here—but little is known about the losses.

New Research

With Humans Out of the Way, Humpbacks Are Flourishing—But So Are Orcas

Researchers are just now beginning to understand what happens when one whale species attacks another

Mosquito researcher Kelly Bennett, turkey baster in hand, is on the prowl, collecting specimens for study

Hunting Deadly Mosquitoes in Panama

The latest podcast “Sidedoor” travels with Smithsonian experts on the trail of the buzzing beasts known as the Aedes

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Massive Animal Tracking Database Collects Its One-Billionth Creature Location

Guzmán and his team were only able to pinpoint the whale shark's whereabouts when it rose to the surface to feed.

What the Longest Known Whale Shark Migration Ever Tells Us About Conservation

Researchers in Panama tracked a specimen via satellite over an unprecedented 12,516 miles

Once common along highland streams in Costa Rica and western Panama, the variable harlequin frog, Atelopus varius, is now endangered throughout its range, thanks in large part to a disease caused by the amphibian chytrid fungus.

These Captive-Bred Frogs Are Facing Predators and the Chytrid Fungus to Make It in the Wild

Scientists in Panama release 500 harlequin frogs, some wearing transmitters, in a first attempt to reintroduce the endangered species

"Panama's Animal Highway" premiers on the Smithsonian Channel, December 13 at 8 p.m. ET/PT.

New Documentary Delights With Spectacular Visuals of the Panama Isthmus, A Migratory Superhighway

Scientists from all over the world come to the Smithsonian Tropical Research Center to study this unique region

The wings of a normal and CRISPR-edited Sara Longwing butterfly show how disabling a single gene can change the patterns

New Research

Scientists Identify the Genes That Paint Butterfly Wings

Using genetic editing, scientists isolated just two genes that play a major role in making butterfly wings as pretty as they are

A green bluebottle fly, part of the Calliphoridae family of carrion flies.

How Fly Guts Are Helping Researchers Catalog the Rainforest

These tiny, buzzing lab assistants provide scientists with a treasure trove of conservation data

Mateo-Vega (derecha) muestra a los compañeros Emberá y Kuna cómo tomar medidas forestales. De izquierda a derecha, los técnicos indígenas Edgar Gariboldo, Chich Chamarro, Baurdino López, Evelio Jiménez, Alexis Solís. (Sean Mattson / Smithsonian)

Future of Conservation

Cómo Los Científicos y Grupos Indígenas Pueden Aliarse Para Proteger Los Bosques y el Clima

Compared with the trees, lianas are able to put more energy into the production of leaves and seeds and less towards growing a trunk.

Tarzan’s Favorite Mode of Travel, the Liana Vine, Chokes Off a Tree’s Ability to Bear Fruit

With lowered fruit production, fewer seeds are dispersed to grow new trees

A female Limosa harlequin frog sports a miniature radio transmitter.

A Pioneering Force of Harlequin Frogs Set Out to Help Save Their Species

Outfitted with tiny transmitters, these frogs are released to face the challenging chytrid fungus that decimated their populations

Exclusively feeding in the wild on blood from live animals, vampire bats, native to Central and South America, can regurgitate blood in order to feed one another, though they won't do this for just anyone.

What a Vampire Bat Can Teach Us About the Economics of Friendship

A Smithsonian scientist says important lessons about making friends and sharing can be learned from these blood-sucking creatures

Multiple views of the young teen's right humerus arm bone that runs from the shoulder to the elbow show where the tumor left its mark.

Oldest Cancer Case in Central America Discovered

A young teen, who died 700 years ago, likely suffered pain in the right arm as the tumor grew and expanded through the bone

Thousands of clay caterpillars, like this one glued to a leaf in Hong Kong, were used to measure how often predators are eating insects around the world.

New Research

Sacrificing Fake Caterpillars in the Name of Science

Ersatz insects are helping ecologists figure out why bugs are more likely to become meals near the equator

“It's hard to imagine," says Smithsonian scientist Carlos Jaramillo,"that you could have the Caribbean ocean in the west Amazon."

A Vast and Now Vanished Amazon Sea Is Discovered

About 18 million years ago, the Caribbean Sea seasonally flooded inland forests, where enormous crocodiles and turtles roamed

Mateo-Vega (right) shows Emberá and Kuna colleagues how to take forest measurements. From left to right, indigenous technicians Edgar Garibaldo, Chicho Chamorro, Baurdino Lopez, Evelio Jiménez, Alexis Solís.

Future of Conservation

How Scientists And Indigenous Groups Can Team Up to Protect Forests and Climate

A collaboration between Smithsonian researchers and the Emberá people of Panama aims to rewrite a fraught narrative

A rare Eld's deer fawn was born at the National Zoo last fall.

Future of Conservation

Take a Walk on the Bright Side at the First Smithsonian Earth Optimism Summit

As an antidote to doom and gloom, a conference on Earth Day weekend, takes a look all the good that is being done

Andrew Altieri of the Smithsonian Tropical Research Institute in Panama conducts a survey where more than 90 percent of the coral reef has died due to hypoxia.

Coral Reefs Now Face Deep Water Dead Zones, As If Climate Change Were Not Enough

A Smithsonian scientist says there may be a greater prevalence of undocumented oxygen-starved deep coastal waters

Panamanian golden frog (Atelopus zeteki)

Here’s Why You Should Never Kiss a Toad

A scientist at Smithsonian’s Tropical Research Institute helped catalog everything known about toxins in the skins of endangered frogs and toads

Creatures so small that they had been overlooked in the past—sea urchins, Echinometra viridis, (above) the size of ping-pong balls and a diminutive species of parrotfish, Scarus iseri, were grazing algae on the reef.

These Itsy-Bitsy Herbivores Could Stage a Huge Coral Reef Rescue

Tiny parrotfish and sea urchins can take over the job of their larger cousins to keep a reef free of algae

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