Archive for the ‘nature’ Category

Yosemite!

Posted: February 22, 2018 in gardening, holidays, nature, personal, science

We just got back from Yosemite National Park! It’s only about 4 hours away from San Francisco and was totally amazing! We were hoping to see Firefall but there wasn’t enough precipitation this year. We did get to see Half Dome turn scarlet at sunset, though! We also encountered a really cute California ground squirrel — and later found out some of the squirrels in the park are vectors for the plague.

If you zoom in closely at the photo of El Capitan, you can see the rock climbing making their descent. A man named Alex Honnold climbed to the top of this granite monolith without and rope in 2017. Here is an article about it!

We saw lots of bark beetle damage on the trees in the park. The little beetles look like mouse droppings. They lay their eggs inside the tree’s soft phloem and then infect the tree with a blue fungus after they’re done. The fungus turns the tree into food for the beetle larvae and also kills the tree. Some scientists think the drought and shorter winters caused by climate change are helping the beetles and the fungus they leave behind damage more trees than ever before.

Germination!

Posted: February 16, 2016 in gardening, nature, science

My 3rd graders dissected germinated peas and identified the radicle, cotyledons, and epicotyl!

We’ve finished sewing up the pockets with steel wire and our garden is finally hanging up on the wall! Next step is to fill the pockets with soil and add some plants. Check back again soon!
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Groundhog Day 2015

Posted: February 1, 2015 in history, holidays, nature

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Groundhog Day is a day celebrated on February 2. According to folklore, if it is cloudy when a groundhog emerges from its burrow on this day, then spring will come early; if it is sunny, the groundhog will supposedly see its shadow and retreat back into its burrow, and the winter weather will persist for six more weeks. (via Wikipedia)

Owl Pellets

Posted: January 13, 2015 in nature, science

Today was the first day of our owl pellet dissection project! We found all sorts of clues about what owls eat. There were rodents, birds, and even one crab inside the vomit balls!

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“Using the snotty strobe lights in its mouth, this deepwater mollusk can fend off hungry predators as mighty as the mantis shrimp.” Click here for more information about this beautiful bivalve!

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The light is actually from highly reflective silica spheres, not bioluminescence! Click on the photo for a video.

Screen Shot 2015-01-07 at 4.24.18 PM(photos via Lakshmi Sawitri)