Posted by Unknown | 5:31 AM

Compass Barrel cactus The barrel cactus is one of the most common cacti in the Southwest.  There are four different species commo...

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Posted by Unknown | 11:34 PM

California barrel cactus, Ferocactus cylindraceus . Barrel cacti are kind of as their names imply, barrels full of water.  The problem...

1 comments Labels: Cactus, Desert plants, Natural history, Nature, Plants

Posted by Unknown | 11:33 PM

Three catalase enzyme experiments.  More bubbles demonstrate more catalase enzymes. On the left, catalase extract from beef muscle, mid...

0 comments Labels: cells, enzymes, experiments

Posted by Unknown | 11:30 PM

Every fall I start thinking about making my own sauerkraut.  Making your own sauerkraut is really a very simple process once you ar...

0 comments Labels: experiments, sauerkraut

Posted by Unknown | 11:27 PM

With the end of the Ice Age, the giant Shasta ground sloth became extinct in our American Southwest deserts. This extinction happ...

0 comments Labels: climate change, Desert plants, ice age, Nature