Showing 32 posts tagged trees
Why climb 30 feet up when you can bike? Check out Ethan Schlussler’s Bicycle Powered Tree House Elevator:
“I got tired of climbing a ladder six and a half million times a day, so I made a bicycle powered elevator to solve this problem,” he writes.
“It was originally a 20-something speed bicycle, but first gear wasn’t slow enough, so I cut the large sprocket off the front, and welded it on the rear to get a lower gear. I also had to do away with the de-railers and make a new chain tensioner.”
The treehouse is not yet complete, but Ethan says, “I will be building walls and insulating it in the next few weeks, and eventually I intend to live (or at least sleep) in it. “
This NASA Earth Science video, NASA Sees Photosynthesis From Space, is not only a lesson in how plants use light to make food for themselves, but also demonstrates how changing your perspective — in this case, looking at plants at a cellular level from hundreds of miles above the Earth — can change your understanding of the information.
Plants are often unable to absorb all the light that hits their leaves and chloroplasts. A small portion is re-emitted as fluorescence, it’s just that we can’t see the faint signal in broad daylight.
But satellites can. NASA shows you what plant fluorescence looks like from orbit. This kind of data is key to understanding the health of global vegetation.
As a part of their research on wildlife population distribution, animal activity and key biodiversity hotspots in Kananaskis Country, Alberta, Canada, the Alberta Parks team set up a motion-sensitive camera to see what happens in the forest when humans aren’t around.
So what goes on when you are not there? As it turns out, it’s mostly about bears scratching their backs.
Related watching: the Explore.org live bear cam in Katmai National Park, Alaska. And with over 1000 videos in the archives, you can be assured that there are more bears and more trees somewhere around here.