Do pests keep rare tree species from becoming common?
A five-year, $2-million grant will help test the hypothesis that rare trees are more susceptible to pathogens than common trees on Barro Colorado Island.
Is there an evolutionary point of no return?
A Chilean sea snail appears to have tried two forms of development and decided to turn back before it was too late.
Presenting hidden biodiversity
An activity book for kids looks at the world of the smallest plants.
Distant relatives become new species
A five-million-year-old urchin ancestor gave rise to two common lineages of sea urchins found today on either side of the Isthmus of Panama, according to new research by a Smithsonian scientist.
