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Bringing Back San Juan Capistrano's Swallows Is One Tough Mission
from the Los Angeles Times (Registration Required)
A bird's call rings endlessly inside the adobe walls at Mission San Juan Capistrano as tourists wander through the courtyard--ablaze with flowers in full bloom--and a handful of fourth-graders snap pictures and take notes for class projects.
Hardly the sweet song of the nightingale, the sound is more like the croak of a distressed frog--or, by an expert's own description, a "rusty, squeaky door."
It's a last-ditch effort to lure back the cliff swallow, which put San Juan Capistrano on the map but has snubbed the mission in recent years. The mission has tried drawing them back with food. It has tried shelter. Now, it's trying seduction.
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In 2013, American Scientist featured an article on odd ice formations on plant stems, including these curling ribbons of ice. One of the types of ice discussed in the article was hair ice—long, thin strands of ice that grow under quite specific conditions. The only problem is that a new study shows the theory put forth at the time—that gas pressure pushes the water out—isn’t correct... (click the link above to read more).
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