“Unnatural” Selection
Humans driveevolutionof conch size
March 21, 2014
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
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Displaying 10 of 59 results.
Window to the past
How long has Central America been so biologically diverse?
September 28, 2017
20-million-year-old fossil seeds shed light on origins of plant biodiversity in Panama.
Declining reefs
What were Caribbean coral reefs like before humans?
September 29, 2017
Fossil reefs from around the Caribbean show how biologically rich these ecosystems once were — and provide goalposts for conservationists hoping to restore them.
Flowers from Darkness
“Tropical forests are the result of an accident of history.” - Carlos Jaramillo.
April 23, 2018
About 66 million years ago, a radical change on the Earth filled tropical forests with flowers. A new catalog of fossil pollen grains may hold an explanation.
Redefining Pristine
Modern marine oxygen-deficiency research inspires search for fossil record
May 11, 2018
Smithsonian scientists who documented massive mortality of corals and reef organisms meticulously studied one of the apparent causes: oxygen deficiency. A Smithsonian paleobiologist asks if the recent fossil record shows signs of similar hypoxia events.
A damselfish moves to Mexico
An Indo-Pacific damselfish takes hold on the other side of the globe
May 23, 2018
Smithsonian marine biologist Ross Robertson suspects that the regal demoiselle hitched a ride to the Gulf of Mexico on an oil rig. Its outstanding success in its new habitat raises questions about its impact in the Gulf.
Mosquitoes and Mamallenas
Sweet desserts drive the search for disease-carrying mosquitoes
July 02, 2018
As researchers ask which disease-carrying mosquito species will rule Panama’s Azuero Penninsula (and perhaps the world), they discover culinary delights along the way.
Not Resilient
Old Species Learn New Tricks…Very Slowly
August 23, 2018
Perhaps old species, like some older people, gradually lose their ability to deal with changes in their environment. Aaron O’Dea and colleagues show that when the Caribbean was cut off from the Pacific by the rise of the Panama land bridge, evolutionarily old species took longer to expand into new habitats than evolutionarily younger species did.
Darwin double time
Can Evolution Rescue Lizards From Climate Change?
February 07, 2019
Some organisms adapt more quickly than others and may have a better chance to survive climate change. 2018 Tupper Fellow, Mike Logan, follows lizards as they adapt to islands.
Coupled selection
How new species arise in the sea
March 15, 2019
Study Sheds New Light on Fundamental
Question in Evolutionary Biology
