Chemistry, a Volatile History– Fascinating BBC documentary series with a whole episode on the phlogiston blind-alley. We saw it a few years ago and would love to see it again. YouTube has clips. Please let me know if you find the whole thing available somewhere! *** I’m appreciatively...
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Their seeds can remain dormant for long periods of time, however, if there is a severe dry spell, which is very common in deserts. Once it rains, even scarcely, the seeds immediately sprout and begin growing. In the very short time span of a year, theplants manage to grow, bloom, pro...