Origins of agriculture
Greenhouse “time machine” sheds light on corn domestication
February 07, 2014
Lower atmospheric carbon and cooler temperatures may have contributed to the domestication of corn, a new study shows.
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Displaying 10 of 58 results.
“Unnatural” Selection
Humans driveevolutionof conch size
March 21, 2014
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
Profile: Kristin Saltonstall
Fire fuels invasive grass
October 19, 2012
Panama’s infamous canal grass rises from the ashes of fire much faster than trees, complicating reforestation efforts.
Tropical Dome Project
Solar domes simulate extreme futureclimate scenarios
June 14, 2017
How will tropical forests respond to a warmer climate with higher atmospheric carbon dioxide concentrations? By growing plants in geodesic domes, Smithsonian scientist Klaus Winter is seeking answers.
Adjusting to climate change
Tropical dark respiration data tweak climate model
September 27, 2017
What do warmer nights mean for the release of carbon dioxide by tropical forests?
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.
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.
