Biology

Dolph Schluter stands atop the craggy outpost of a twenty-metre high clifftop, his gaze intently focused on the waves below him. From his vantage point, he can see the fishing boat that has come to take him off Los Hermanos, a remote island in the Galapagos archipelago. But it's not much use. The seas are too rough and the steep shoreline of the jagged volcanic rock would smash to pieces any boat...

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featured question

Q: I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen differing depictions. When looking at the moon from the northern hemisphere, does the lighted portion on the waxing phases appear on the right or the left? How about the waning phases? Thank you for your help.

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In the news

Canadian researchers spin spider silk proteins into artificial silk

February 12, 2015

Spiders make seven different kinds of silk they use for different purposes. But although humans have farmed silkworms for thousands of years, spider silk has proven impractical. Instead, scientists in Jan Rainey's biochemistry lab at Dalhousie University are working out the molecular nature of the strongest kind of spider silk, which is used for wrapping prey, and using the knowledge to create new ultra-strong biomimetic fibers. Read more...

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