- A new study finds that trains can be worse for the environment than planes.
Key factors: how much infrastructure is needed for each form of
transportation (tracks, parking structures, airports, etc.) and how
many passengers the vehicle is carrying.
- Laughing at the Geographic: A recent study in which researchers tickled young gorillas, chimpanzees, bonobos, and orangutans concludes that laughing is not a human-only expression of emotion--it started with our evolutionary ancestors. Some studies show that laughter may have originated further down the line than the great apes, as far back as rats.
- Researchers at the Smithsonian Institution determined that migratory Canada geese downed US Airways Flight 1549 in the Hudson River on January 15. Wildlife professionals may be able to help avoid future collisions based on the finding.
Photo: Rachel Cotterill
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