diatom

A Bacterium on a Diatom on an Amphipod

I see a lot of science stuff, and it’s pretty hard to get me to say “wow” … Just kidding, I say it all the time!

Definitely said it when I saw this brain-melting illustration of the scale differences between the domains of life. In one electron microscope picture!! Just remember, there’s about a trillion of those little bacteria on and in you all the time, just that tiny.

If you like this, you’ll definitely like this interactive “scale of the universe” tool.

(tip o’ the electron microscope to my Twitter friends who shared this)

sciencealert.com
Algae has been engineered to kill cancer cells and leave healthy cells unharmed
90% of cancer cells destroyed!
By Signe Dean

Scientists have genetically engineered tiny algae to kill up to 90 percent of cancer cells in the lab, while leaving healthy ones unharmed, and the treatment has also been shown to effectively treat tumours in mice without doing damage to the rest of the body.

Developing medicine that only attacks tumour cells and leaves the rest of the body alone is one of the biggest challenges in cancer drug therapy. Such targeted chemotherapy helps to avoid some of the devastating side-effects associated with typical chemo treatment, when all fast-dividing cells in the body are bombarded with toxic drugs – including hair follicles, nails, and bone marrow.

That’s why researchers have been working on nanoparticle-based cancer drug delivery, and have been sending drug-loaded, porous silica particles into the body to target tumour cells. However, the manufacturing of these types of nanoparticles is expensive and requires industrial chemicals, such as hydrofluoric acid.

Now an international team of scientists from Australia and Germany have genetically engineered a diatom algae that can get the synthetic nanoparticle job done just as nicely.

Continue Reading.

Diatoms

WHAT’S THAT?
Diatoms
are tiny, mostly single-celled algae that live in water. They’re known for their mesmerizing shapes and symmetry, but don’t let their beauty fool you: these guys contribute up to 45% of the ocean’s total source of organic nutrients and 20% of the oxygen you breathe.

WHAT’S THE LATEST?
Recent research
has found that diatoms are sensitive to their climates. Warmer climates throughout Earth’s history have caused a decrease in diatom diversity. It’s believed that warming climates now will jeopardize the extinction of a large number of diatoms, which could harm worldwide ecosystems and food chains that humans depend on. Scientists warn it’s still too early to extrapolate this data to manmade global warming.

Image by Christian Gautier/Nikon Small World.

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From Drifter to Dynamo: The Story of Plankton

Most plankton are tiny drifters, wandering in a vast ocean. But where wind and currents converge they become part of a grander story… an explosion of vitality that affects all life on Earth, including our own. Watch the latest “Deep Look” video from KQED and pbsdigitalstudios:

http://youtu.be/jUvJ5ANH86I

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diatoms - california academy of sciences geology

1. Biddulphia deodora -  Miocene, ph#000058D,scale bar = 10 µm

2. Actinoptychus chenevierei - holotype, Cretaceous, ph#000677D, scale bar = 10 µm

3. Lithodesmium margaritaceum - Cretaceous, ph#000865D, scale bar = 10 µm

4. Aulacodiscus currus - holotype, Eocene, ph#001088D, scale bar = 10 µm

5. Triceratium diversum - holotype, Eocene, ph#001131D, scale bar = 10 µm

6. Triceratium swastika - Cretaceous, ph#000956D, scale bar = 10 µm

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oo28oo requested some eukaryotic algae pictures, so I figured I’d post some of my favorite ones I’ve found over the years! The individual names of the algae will pop up if you click on the photos 

As I mentioned before, many of these algae came from slimy and disgusting clumps of pond scum. They usually smelled pretty horrible, too! It’s only when you look at them under the microscope that you see the true beauty.

Edit: shout out to Pepperofthenickel for identifying the Scenedesmus in the bottom left as Scenedesmus dimorphus!